Gradle Cache Location or Gradle local repository is the location where Gradle maintain its cache, which includes all dependencies Gradle downloads from repositories when we build any project, for reusing in the next times we run the build again.
Gradle uses $USER_HOME/.gradle as the default directory to store its local cache.
So, if you’re in Linux system: ~/.gradle
If you’re in Windows, it should be: C:\Users\[Your_Username]\.gradle
For example,
In my Windows 10, the location is: C:\Users\geeksgn\.gradle
In my Ubuntu 16.04, the location is: /home/geeksgn/.gradle
2. Change Gradle Cache Location
We can change the Gradle Cache Location to some other directory by setting the environment variable GRADLE_USER_HOME
For example,
2.1. In Linux
Edit the /etc/profile by any editor such as: vim, nano, etc and append following line at the end of the file.
|
export GRADLE_USER_HOME=/opt/gradle |
Then, issue below command make the environment variables effectively.
2.2. In Windows
2.2.1. In Windows 7, right click My Computer and select Properties > Advanced.
In Windows 8, Windows 10, go to Control Panel > System > Advanced System Settings.
2.2.2. Under System Variables, click New
2.2.3. In the Variable Name field, enter GRADLE_USER_HOME
2.2.4. In the Variable Value field, enter your desire folder, for ex: D:\Misc\Gradle
Change Gradle Cache Location in Windows
2.2.5.Click OK
2.3. Verification
You can verify again by open a new terminal, go to any Gradle project and run some Gradle tasks. Then check the new location where you have just set for the GRADLE_USER_HOME variable.
3. Summary
We have just learned about Gradle Cache Location or Gralde local repository which is the location where Gradle store its libraries, dependencies during the builds of project. We also learned about how to change the default Gradle cache location to other directory by setting the environment variable.
Below are other articles related to Gradle topic, if you’re interested in, please access the following links:
Install Gradle on Ubuntu 16.04 LTS (Xenial Xerus)
Install Gradle on Windows
Gradle Proxy Settings
Specify The Build File in Gradle
Convert Maven POM File to Gradle Build File
Gradle Tutorials
Using Gradlew, The Gradle Wrapper
Nowadays, it’s quite easy to have access to an embedded linux installation under Windows, allowing to use command line tools (like maven or gradle) right from that terminal.
One problem still remains : everything executed inside that local shell installation will have absolute paths, not known by windows. This is going to be problematic when one is willing to use gradle in the terminal and eclipse under windows, as the generated .classpath files will by default have absolute paths, not understandable by eclipse. This can however be corrected by changing :
- 1. the gradle home user location (in order to store cached dependencies in the windows filesystem, most of the time
~/.gradle) - 2. the gradle build files (in order for the absolute paths to be replaced by a variable,
GRADLE_HOME) - 3. the eclipse installation (in order for eclipse to know that new
GRADLE_HOMEvariable)
Note : for years, when working under windows, i was using cygwin, but the expererience was less straightforward.
Prerequesite — How to install WSL under windows
Just follow that kind of tutorials in order to activate WSL (bash.exe) under Windows : How to install the linux bash shell on windows 10
Then pick up a distribution from the Microsoft Store, for example Debian.
Prerequesite — Best way to access the bash shell
As the cmd.exe terminal is quite inefficient, i’m instead starting a SSH server inside the bash container ; once configured, i can just access my local terminal with any SSH client. Here i’m using Netsarang XShell.
Links :
- Netsarang XShell
- Dedicated tutorial : Using the linux subsystem in windows 10
Prerequesite — One-liner command to install latest gradle version
As debian is providing a very old gradle version, we want to install the latest one.
Once connected in the windows bash session :
sudo apt-get update && sudo apt-get upgrade -y
sudo apt-get install -y zsh openjdk-8-jdk-headless openjdk-11-jdk-headless git curl wget unzip unrar-free maven
cd /opt && curl -sL 'https://services.gradle.org/distributions/gradle-5.2.1-bin.zip' | sudo jar xvf /dev/stdin && sudo ln -s /opt/gradle-5.2.1/ /opt/gradle && sudo chmod a+x /opt/gradle/bin/gradle
Then add in .bashrc something like (the PATH reconfiguration is mandatory to use the locally installed gradle under the terminal) :
export PATH=.:/opt/gradle/bin/:$PATH
export WORKSPACES=/mnt/e/workspaces/
Step 1 — Customize the gradle home user location
Just put in place an alias in .bashrc, allowing through the --gradle-user-home parameter to have cached dependencies being stored in the regular path under windows (for eclipse to be able to reuse them). Without this parameter, dependencies would be stored inside the WSL installation (and wouldn’t be available for eclipse).
alias gradle='gradle --gradle-user-home /mnt/c/Users/sergio/.gradle'
Step 2 — Customize gradle build files
In order for generated eclipse .classpath to not contain anymore an absolute path, it is mandatory to customize each build.gradle file with the pathVariables string substitution (@see gradle configuration for eclipse plugin) :
// === Eclipse configuration
eclipse {
pathVariables 'GRADLE_HOME': file('/mnt/c/Users/sergio/.gradle')
classpath {
downloadSources = true
downloadJavadoc = false
}
}
Step 3 — Customize eclipse
Now we have to tell to eclipse to understand this new GRADLE_HOME variable.
As classpath entries under .classpath are now looking like this :
<classpathentry sourcepath="GRADLE_HOME/caches/modules-2/files-2.1/com.google.guava/guava/25.0-jre/30ade485699e7782cc2369b0e5d3d8e0bfc317c/guava-25.0-jre-sources.jar" kind="var" path="GRADLE_HOME/caches/modules-2/files-2.1/com.google.guava/guava/25.0-jre/7319c34fa5866a85b6bad445adad69d402323129/guava-25.0-jre.jar">
<attributes>
<attribute name="gradle_used_by_scope" value="main,test"/>
</attributes>
</classpathentry>
Overview
The following page will be an excellent guide with getting started with the gradle build system in your
Java™ projects. Use this guide as a reference when using Gradle as a build system for the very first time.
What is Gradle?
Gradle is an evolutionary build system that extends upon the concepts of the Apache Ant and the Apache Maven
build system. The project configuration is based off the Groovy DSL (Domain-specific Language) as
opposed to the XML form used by Apache Maven.
Downloading and Installing Gradle
Gradle runs on all major operating systems and requires a Java JDK version 7 or higher to run. In order for
gradle to run, the JAVA_HOME environment variable must be set.
For the details on installing the Java Development Kit (JDK) please refer to this document:
- Getting Started With Java
An example of how to check JAVA_HOME environment variable in a Mac OS:
$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home
Check and make sure Java is installed and in the system path:
$ java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
There are several ways to install gradle. This document will cover the basic installation of a downloaded
zip from the Gradle Releases page.
A common place to install software tools in *nix is in the /usr/local folder. For the purpose of this
document, the gradle install path will be /usr/local/gradle. In windows, it would be in C:\java.
Alternative Ways to Install Gradle
There are package managers or installers that will provide an easier way to install gradle. If you are
familiar with such package managers or installers, here are several examples on alternative ways to install java tools
software like gradle. Please note that the installation will also automatically add gradle to your system
path. You may still need to do the manual steps to create the GRADLE_HOME environment variable.
Using Homebrew
$ brew update && brew install gradle
Using Scoop
Using SDKMAN!
$ sdk install gradle 3.5.1
Environment Variables and System Paths
Environment Variable for *NIX Systems
In this example, the following environment variable is set for *nix systems:
GRADLE_HOME=/usr/local/gradle
Environment Variable for Windows™
For Windows, the following environment variable is set:
GRADLE_HOME=C:\java\gradle
Adding gradle to the system path will allow you to directly use gradle without having
to specify the full path. This is a convenient way to execute a command.
When gradle is not in the system path, the command to execute will be as follows:
$ /usr/local/gradle/bin/gradle --version
When gradle is in the system path, it may be executed without specifying the entire path:
$ gradle --version
Mac OS™
Add the following export line in your $HOME/.bashrc file
export GRADLE_HOME=/usr/local/apache-maven
Add the following entry to your /etc/paths file as shown on line #7.
$ cat /etc/paths
/usr/local/bin
/usr/bin
/bin
/usr/sbin
/sbin
/usr/local/gradle/bin
Other Unix and Linux Systems
Line #1 will define the environment variable GRADLE_HOME. Line #2 will add gradle to the system path.
export GRADLE_HOME=/usr/local/apache-maven
export PATH=$PATH:$GRADLE_HOME/bin</pre>
Verify in *nix operating systems that gradle is in the system path by executing this command in the terminal.
$ gradle --version
------------------------------------------------------------
Gradle 3.5
------------------------------------------------------------
Build time: 2017-04-10 13:37:25 UTC
Revision: b762622a185d59ce0cfc9cbc6ab5dd22469e18a6
Groovy: 2.4.10
Ant: Apache Ant(TM) version 1.9.6 compiled on June 29 2015
JVM: 1.8.0_131 (Oracle Corporation 25.131-b11)
OS: Mac OS X 10.12.5 x86_64</pre>
Windows™
Setup the environment variable in a Windows operating system by following the series of steps below.
- Right-click on the My Computer or This PC. and select the Properties from the menu item. The Control Panel window will open up.
- From the Control Panel Window select the Advanced system settings. The System Properties dialog will appear.
- From the System Properties dialog click the Environment Variables button. The Environment Variables window will appear.
- From the Environment Variables window, add GRADLE_HOME as a variable and the value should be the path of your java home diretory, i.e. C:\java\gradle
The second part of a JDK Windows installation is to add gradle to the system path.
- From the Environment Variables window in the previous step, search for the path variable in the System Variables section and click the Edit button.
- Add %GRADLE_HOME%\bin to the beginning of the semi-colon (;) separated list of paths. In Windows 10, just add a new path entry instead with the value %GRADLE_HOME%\bin.
Verify gradle is in the system path by executing the following in the DOS command console.
C:\> gradle --version
Your First Gradle Project
Create Project Directory
Execute the following commands to create the project directory:
$ mkdir my-first-app
$ cd my-first-app</pre>
Create a Gradle Wrapper
Execute the following command to initialize gradle wrapper:
my-first-app$ gradle wrapper
:wrapper
BUILD SUCCESSFUL
Total time: 1.726 secs
Here are the files generated by the wrapper task.
my-first-app$ tree
.
├── gradle
│ └── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
└── gradlew.bat
2 directories, 4 files
Created Files
- gradlew — this is the gradlew executable and from now on should be used to run gradle build tasks
- gradlew.bat — this is the DOS equivalent of gradlew.
- gradle/wrapper/gradle-wrapper.properties — the gradle wrapper config file
The gradle-wrapper.properties file
my-first-app$ cat gradle/wrapper/gradle-wrapper.properties
#Sat Jun 23 19:16:07 PDT 2016
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-3.5-bin.zip
Initialize a New Gradle Build
Run the gradlew init command:
my-first-app$ ./gradlew init
:wrapper UP-TO-DATE
:init
BUILD SUCCESSFUL
Total time: 2.377 secs</pre>
The build.gradle and settings.gradle files were generated by the init task as show on line #3 and #10 respectively.
my-first-app$ tree
.
├── build.gradle
├── gradle
│ └── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── settings.gradle
The build.gradle file
The contents of build.gradle file will contain a template with the java plugin block commented. You may enable
this block by deleting the start and end of the block comment on lines #9 and #31 of the generated code shown
on Code Snippet 4.0.
Code Snippet 4.0. The generated build.gradle file
The following code snippet shows the uncommented block to enable the java plugin support.
Code Snippet 4.1. The build.gradlew file with the block comments removed.
/*
* This build file was generated by the Gradle 'init' task.
*
* This generated file contains a commented-out sample Java project to get you started.
* For more details take a look at the Java Quickstart chapter in the Gradle
* user guide available at https://docs.gradle.org/3.5/userguide/tutorial_java_projects.html
*/
// Apply the java plugin to add support for Java
apply plugin: 'java'
// In this section you declare where to find the dependencies of your project
repositories {
// Use 'jcenter' for resolving your dependencies.
// You can declare any Maven/Ivy/file repository here.
jcenter()
}
// In this section you declare the dependencies for your production and test code
dependencies {
// The production code uses the SLF4J logging API at compile time
compile 'org.slf4j:slf4j-api:1.7.22'
// Declare the dependency for your favourite test framework you want to use in your tests.
// TestNG is also supported by the Gradle Test task. Just change the
// testCompile dependency to testCompile 'org.testng:testng:6.8.1' and add
// 'test.useTestNG()' to your build script.
testCompile 'junit:junit:4.12'
}
Initialize Your Project
Project Layout
The default project layout that the java plugin implicitly uses is shown below.
Table 1.0. The default project layout
| Directory | Description |
|---|---|
| src/main/java | The production Java code |
| src/main/resources | The production resources file |
| src/test/java | The test java code |
| src/test/resources | The test java resources file |
Create the source directories:
$ mkdir -p src/main/java src/test/java
For the purpose of this demonstration create a simple App.java and AppTest.java in the package com.kapresoft.
The src directory should contain the following files.
my-first-app$ tree ./src
./src
├── main
│ └── java
│ └── com
│ └── kapresoft
│ └── App.java
└── test
└── java
└── com
└── kapresoft
└── AppTest.java
8 directories, 2 files
App.java
package com.kapresoft;
/**
* Hello world!
*
*/
public class App
{
public String getAppId() {
return "hello-world";
}
public static void main( String[] args )
{
System.out.println( "Hello World!" );
}
}
AppTest.java
package com.kapresoft;
import junit.framework.TestCase;
/**
* Unit test for simple App.
*/
public class AppTest extends TestCase {
public void testAppId() {
App app = new App();
assertEquals("App ID", "hello-world", app.getAppId());
}
}
Build Your Project
Now that we have created the App.java and AppTest.java we are ready to build the project.
This can be done by executing the build task as show below.
my-first-app$ ./gradlew build
:compileJava
:processResources NO-SOURCE
:classes
:jar
:assemble
:compileTestJava
:processTestResources NO-SOURCE
:testClasses
:test
:check
:build
BUILD SUCCESSFUL
Total time: 7.544 se
Run Your App
Run your App using the built jar library
my-first-app$ java -cp build/libs/my-first-app.jar com.kapresoft.App
Hello World!
Or you may run using the built classes folder
my-first-app$ java -cp build/classes/main com.kapresoft.App
Hello World!
Useful Gradle Commands
Gradle Tasks
Gradle provides many available automated tasks. For the purpose of this documentation we are only interested in
the build task. Please refer to the Gradle documentation for full details.
The following command will display all available tasks for the project.
my-first-app$ gradlew tasks --all
:tasks
------------------------------------------------------------
All tasks runnable from root project
------------------------------------------------------------
Build tasks
-----------
assemble - Assembles the outputs of this project.
build - Assembles and tests this project.
buildDependents - Assembles and tests this project and all projects that depend on it.
buildNeeded - Assembles and tests this project and all projects it depends on.
classes - Assembles main classes.
clean - Deletes the build directory.
jar - Assembles a jar archive containing the main classes.
testClasses - Assembles test classes.
Build Setup tasks
-----------------
init - Initializes a new Gradle build.
wrapper - Generates Gradle wrapper files.
Documentation tasks
-------------------
javadoc - Generates Javadoc API documentation for the main source code.
Help tasks
----------
buildEnvironment - Displays all buildscript dependencies declared in root project 'my-first-app'.
components - Displays the components produced by root project 'my-first-app'. [incubating]
dependencies - Displays all dependencies declared in root project 'my-first-app'.
dependencyInsight - Displays the insight into a specific dependency in root project 'my-first-app'.
dependentComponents - Displays the dependent components of components in root project 'my-first-app'. [incubating]
help - Displays a help message.
model - Displays the configuration model of root project 'my-first-app'. [incubating]
projects - Displays the sub-projects of root project 'my-first-app'.
properties - Displays the properties of root project 'my-first-app'.
tasks - Displays the tasks runnable from root project 'my-first-app'.
Verification tasks
------------------
check - Runs all checks.
test - Runs the unit tests.
Other tasks
-----------
compileJava - Compiles main Java source.
compileTestJava - Compiles test Java source.
processResources - Processes main resources.
processTestResources - Processes test resources.
Rules
-----
Pattern: clean<TaskName>: Cleans the output files of a task.
Pattern: build<ConfigurationName>: Assembles the artifacts of a configuration.
Pattern: upload<ConfigurationName>: Assembles and uploads the artifacts belonging to a configuration.
BUILD SUCCESSFUL
Total time: 0.961 secs
Gradle Help
If you need more details on a particular task you may use the built-in help.
This command will display help on the build task.
my-first-app$ gradlew help --task build
:help
Detailed task information for build
Path
:build
Type
Task (org.gradle.api.Task)
Description
Assembles and tests this project.
Group
build
BUILD SUCCESSFUL
Total time: 0.923 secs
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Post Date: 07 Dec 2023
AtomicReference in Java is an intriguing feature that enhances the thread-safety of your applications. This guide dives into the intricacies of AtomicReference, explaining its functionality, benefits, and practical usage in Java development. We’ll explore its comparison with similar atomic classes and provide insights on when and how to effectively implement it in your projects.
Java • Custom Annotations In Action
Post Date: 06 Dec 2023
In the dynamic landscape of Java programming, custom annotations have become a pivotal tool, revolutionizing code development and maintenance. As specialized metadata, custom annotations in Java empower developers to infuse additional information into their code, enhancing readability, maintainability, and functionality. They simplify complex tasks like serialization and data validation, and improve communication in collaborative coding environments.
Functional Programming with Java
Post Date: 03 Dec 2023
Functional Programming (FP) in Java marks a significant shift towards a more efficient and clean coding paradigm, integrating core principles like immutability, pure functions, and higher-order functions into its traditional object-oriented framework. This article delves into the pivotal role of lambda expressions and the Stream API in enhancing code readability and performance.
Java vs. C#
Post Date: 29 Nov 2023
In the dynamic and ever-evolving world of software development, Java and C# stand as two titans, each with its own unique strengths, philosophies, and ecosystems. This article delves into an in-depth comparison of Java and C#, exploring their historical context, language features, performance metrics, cross-platform capabilities, and much more.
Java • Mockito vs EasyMock
Post Date: 26 Nov 2023
Java, a widely-used programming language, has evolved significantly over the years, especially in the realm of testing. In this digital era, where software development is fast-paced and highly iterative, the importance of efficient and reliable testing frameworks cannot be overstated. Among the various tools and libraries available for Java developers, Mockito and EasyMock stand out as popular choices for unit testing.
Java • Single Responsibility Principle
Post Date: 23 Nov 2023
The Single Responsibility Principle (SRP), a fundamental concept within the SOLID principles, is crucial in Java programming. It dictates that each class should have only one reason to change, focusing on a single functionality or concern. This approach is particularly effective in Java, known for its robust object-oriented features, where SRP enhances maintainability, readability, and scalability of applications.
Java • Are Static Classes Things Of The Past?
Post Date: 22 Nov 2023
Static classes have been a staple in the programming world for decades. Traditionally, a static class is one where all members and functions are static, meaning they belong to the class itself rather than any specific instance of the class. This makes static classes an efficient tool for grouping related functions and data that do not require object instantiation to be accessed.
Java • Multiple Inheritance Using Interface
Post Date: 22 Nov 2023
Amongst the many facets of object-oriented programming, the concept of inheritance is fundamental. Multiple inheritance, a feature where a class can inherit from more than one superclass, can be particularly powerful but also complex. Java, however, does not support multiple inheritance directly in the way languages like C++ do. Instead, it offers a robust alternative through interfaces.
Java • Interfaces Are Replacing Abstract Classes
Post Date: 22 Nov 2023
The Java programming language, renowned for its robust structure and versatile capabilities, has witnessed a notable evolution in its fundamental components over the years. Among these, the role and functionality of interfaces and abstract classes have undergone significant changes, particularly with the introduction of new features in Java 8.
Java • Decoupling Arbitrary Objects Through Composition
Post Date: 22 Nov 2023
In the dynamic landscape of software development, the concept of object decoupling plays a pivotal role in crafting efficient, maintainable, and scalable applications. At its core, object decoupling refers to the design approach where components of a program are separated in such a manner that they are independent, yet functionally complete. This separation ensures that changes in one part of the system minimally impact other parts, facilitating easier updates, debugging, and enhancement.
Java Primitives & Primitive Wrappers
Post Date: 16 Nov 2023
Java, a robust and widely-used programming language, stands out for its efficient handling of data types. Central to its functionality are the Java primitives and their corresponding wrapper classes. This article delves into the essence of Java primitives, their types, and the distinction between primitive and non-primitive data types, including examples to illustrate these concepts.
Java • Primitive int vs Integer Best Practices
Post Date: 07 Nov 2023
In Java, one of the foundational decisions developers must make pertains to choosing between primitive types and their corresponding wrapper classes, such as int and Integer. Both have their place in Java applications, and understanding their differences is paramount for writing efficient and effective code.
Java • Harnessing Static and Default Methods in Interfaces
Post Date: 06 Nov 2023
The arrival of static and default methods in Java 8 marked a significant shift in interface capabilities, expanding their functionality and versatility in Java’s object-oriented ecosystem. This article explores the nuances of these features and their impacts on Java programming, simplifying complex concepts and illustrating their practical applications in modern software development.
Java Modern Collection Utilities
Post Date: 06 Nov 2023
Java’s evolution has always been about simplifying complexity and enhancing efficiency. The collection utilities have undergone significant improvements since JDK 8, transitioning from the Collections utility class to the intuitive List.of(), Map.of(), and Set.of() methods.
Java • AssertJ vs Hamcrest Assertion Frameworks
Post Date: 27 Oct 2023
When working with testing frameworks like JUnit or TestNG, selecting the right assertion framework can significantly enhance the readability of your test code and improve the overall quality of your tests. Two of the most popular Java assertion frameworks are AssertJ and Hamcrest.
Java • Unit Testing Best Practices
Post Date: 26 Oct 2023
Unit testing is a fundamental aspect of software development, ensuring that each individual unit of source code is thoroughly examined and validated for correctness. With Java being one of the most widely used programming languages, it is crucial to adhere to the best practices for unit testing in Java to maintain the integrity and performance of the software.
Logback for Beginners
Post Date: 19 Oct 2023
Logback, a Java-based logging framework within the SLF4J (Simple Logging Facade for Java) ecosystem, is the preferred choice in the Java community, serving as an enhanced successor to the popular Log4j project. It not only carries forward the legacy of Log4j but also brings to the table a quicker implementation, more comprehensive configuration options, and enhanced flexibility for archiving old log files.
Java • Modern Looping And Filtering with Stream API
Post Date: 19 Oct 2023
Java has constantly evolved since its inception, presenting developers with numerous tools and methods to make coding more efficient and readable. Among these are modern techniques for looping and filtering data.
Java • Converting Strings To List
Post Date: 19 Oct 2023
When it comes to working with Java, converting strings into lists is a common and essential operation that can significantly enhance your data processing capabilities. Whether you’re a seasoned programmer or just starting, mastering this technique will prove to be invaluable in your coding endeavors.
Java var Best Practices
Post Date: 18 Oct 2023
Java, with each release and update, continually evolves to simplify the developer’s journey while preserving its core tenets of readability and robustness. One of the notable introductions in Java 10 was the var keyword. As with most new features, it sparked debates and questions regarding its efficacy and best practices.
URI vs URL in Java
Post Date: 16 Oct 2023
In the realm of Java and web development, the terms URL and URI often emerge in discussions, leaving some in a quagmire of confusion. This article aims to elucidate the disparities between the two, elucidating their syntax, utilization in Java, and the nuances that set them apart.
Java vs JavaScript • Which Is In More Demand?
Post Date: 02 Oct 2023
Java and JavaScript, despite their similar names, serve distinct purposes within the realm of software development. As both languages continue to evolve and find niches in the modern tech landscape, it’s crucial to understand their differences and their respective market demands.
Java Cloning Strategies
Post Date: 23 Jun 2023
Object copying is a fundamental aspect of Java programming, finding relevance and utility in diverse contexts. Whether it’s creating independent copies of objects, maintaining object state, or avoiding unintended side effects, understanding efficient and reliable cloning strategies is essential.
Java Comprehensive Guide
Post Date: 17 May 2023
Java is a versatile programming language that has gained widespread popularity for its platform independence and robustness. In this comprehensive guide, we will delve into the various aspects of Java programming, covering essential concepts, tools, and best practices.
Java • Converting Strings To Map
Post Date: 03 May 2023
This article discusses converting a string of key-value pairs that are delimited by a specific character, known as a delimiter, into a Map in Java.
Maven vs Gradle
Post Date: 01 May 2023
Maven and Gradle are two of the most popular build automation tools for Java-based projects. Both tools are designed to simplify the build process, manage dependencies, and facilitate project organization.
Java 19 Virtual Threads
Post Date: 04 Apr 2023
In this article, we will provide an overview of virtual threads in Java and their use in concurrent programming. We will define what virtual threads are and how they differ from normal threads. Additionally, we will discuss the benefits of virtual threads over traditional concurrency approaches and provide code examples to illustrate the differences between the two.
Decoupling Domain Objects: Simplifying System Architecture
Post Date: 31 Mar 2023
When you design an object-oriented system from top to bottom, sometimes the objects that represent the “domain” (what the system is about) don’t match the objects that represent the “entities” (what the system stores). To solve this problem, you can use a technique called “decoupling” to separate the layers of objects.
Java Final Modifier
Post Date: 27 Mar 2023
In Java, the final keyword (also known as a modifier) is used to mark a variable, method, or class as immutable, meaning its value or behavior cannot be modified once it has been initialized.
Java Records
Post Date: 14 Mar 2023
A Java record is a new feature introduced in Java 14 that allows developers to create a class that is primarily used to store data. A record is essentially a concise way to define a class that consists mainly of state (fields) and accessors (getters).
Java 17 Features
Post Date: 14 Mar 2023
JDK 17, introduces several new features and improvements, including enhanced random number generators, new encoding-specific methods for the String class, and default classes for Java ciphers. It also removes the experimental AOT and JIT compilers, and introduces support for Sealed Classes and Records. These changes provide developers with more flexibility and control, making it easier to write efficient and secure Java applications.
Java Optional — Why Developers Prefer Optional Values
Post Date: 12 May 2019
This article discusses the use of Java Optional to introduce optional values instead of null. We will deep dive into understanding why developers prefer the Optional class to clearly communicate an optional value as opposed to a vague null representation of a variable.
Java • Int to String Conversion Guide
Post Date: 11 May 2019
In Java, often times the ability to return a string representing the specified integer is a common task. This article illustrates several mechanisms to convert int to a string in Java. In the opposite scenario, the means to resolve an integer representing the value of the specified String. The returned value is an Integer object that is the equivalent integer value of the argument string.
Java • Double to String Conversion | Beginner’s Guide
Post Date: 11 May 2019
Converting double to a String value in Java has been a typical task to do for software development. This article discusses the various ways on how to convert a double to a string in Java. While there are advantages in representing a double to its String object representation, the opposite task of converting a String object to a double can also be addressed. This document examines the reasons why conversions of double in Java are beneficial for beginners who are learning to develop in java.
Setting Java Compiler Version in Maven
Post Date: 27 Aug 2018
This document demonstrates ways to set the java compiler version in maven via the maven.compiler.target property and the maven-compiler-plugin configuration section.
Getting Started With Java
Post Date: 15 Aug 2018
The following page will illustrate how to get started with the Java Programming
Language. In addition, this document provides an overview of how to install
java and the environment variables you will need to set. A hands-on approach
illustrates how to compile and run your first Hello World java code.
The . gradle/caches directory holds the Gradle build cache. So if you have any error about build cache, you can delete it.
Can I remove .gradle folder?
gradle folder. Inside you can find all settings and other files used by gradle to build the project. You can delete these files without problems.
How do I set the gradle path on a Mac?
Install Gradle on Mac
- Install Java version 8 or higher.
- Make dir then unzip it mkdir -p ~/bin/gradle unzip -d ~/bin/gradle gradle-6.8.3-bin.zip.
- Set environment variables in your bash config file, e.g. ~/.bash_profile export GRADLE_HOME=$HOME/bin/gradle/gradle-6.8.3 export PATH=$GRADLE_HOME/bin:$PATH.
How do I know if Gradle is installed Mac?
Verify Gradle Installation. Now open the command prompt. In the command prompt, enter Gradle -version. It will display the current version of Gradle just installed on the screen.
Can I delete .android folder?
I don’t have any android devices eighter. If you are no longer doing Android development, this should be safe to remove.
How do I create a .gradle folder?
How to get started with Gradle?
- Add bin directory of Gradle to the user/system PATH: in Unix systems: add export PATH=$PATH:/home////bin to ~/. …
- Gradle will automatically download the project dependencies from Maven Central.
Is it safe to delete gradle wrapper?
You can safely delete the ~/. gradle directory. It is created by the Gradle wrapper to store and cache downloaded files, so it will just repopulate the folder with the files necessary for future builds.
How do I run a clean gradle build?
If you wish to clean (empty) the build directory and do a clean build again, you can invoke a gradle clean command first and then a gradle assemble command. Now, fire the gradle assemble command and you should have a JAR file that is named as –. jar in the build/libs folder.
What is gradle build tool?
Gradle is a general-purpose build tool
Gradle makes it easy to build common types of project — say Java libraries — by adding a layer of conventions and prebuilt functionality through plugins. You can even create and publish custom plugins to encapsulate your own conventions and build functionality.
How do I run a gradle file?
To run a Gradle command, open a command window on the project folder and enter the Gradle command. Gradle commands look like this: On Windows: gradlew … e.g. gradlew clean allTests.
What is gradle file in PC?
A GRADLE file is a script created by Gradle, which is a tool used to help teams build and deliver software. It contains a script, which includes a list of commands to be executed by Gradle. GRADLE files are typically used for storing build scripts in a domain-specific language based on Groovy.
Where is my local gradle repository?
Gradle’s local repository folder is: $USER_HOME/. gradle/caches/modules-2/files-2.1.
What is a .gradle folder?
The Gradle user home directory ( $USER_HOME/.gradle by default) is used to store global configuration properties and initialization scripts as well as caches and log files.
What is a gradle script?
gradle” are scripts where one can automate the tasks. For example, the simple task to copy some files from one directory to another can be performed by the Gradle build script before the actual build process happens.
Where is the build gradle file?
gradle file, located in the root project directory, defines build configurations that apply to all modules in your project. By default, the top-level build file uses the buildscript block to define the Gradle repositories and dependencies that are common to all modules in the project.
What happens when I delete Android folder?
When you delete files or folders, the data will be sent to your Deleted Files folder. This will also remove them from any devices to which they are syncing. You cannot use your mobile device to delete top-level or root folders.
Can I delete Android folder Mac?
You can simply open the applications folder and move Android Studio to the trash.
Do I need SWSetup folder?
The SWSetup folder contains the installation files for all your drivers and updates. You do not need this folder, but you should definitely back it up. I used a blank dvd and I also used my external harddrive for another back up. This folder is important incase something goes wrong with your computer.
How do I know if gradle is installed?
Install Android Studio (Latest) with Gradle 4.6
- To check if it’s already installed, look for the program file: Android Studio. …
- Go to developer.android.com/studio.
- Download and run the installer for your operating system.
- Step through the Android Studio Setup Wizard, then click Finish.
Which version of gradle do I have?
9 Answers. In Android Studio, go to File > Project Structure. Then select the “project” tab on the left. Your Gradle version will be displayed here.
How do I download gradle for Mac?
Installing manually
- Download the latest Gradle distribution. The current Gradle release is version 7.2, released on 17 Aug 2021. …
- Unpack the distribution. Linux & MacOS users. …
- Configure your system environment. Linux & MacOS users. …
- Verify your installation.
How do I know if Maven is installed?
Once Maven is installed, you can check the version by running mvn -v from the command-line. If Maven has been installed, you should see something resembling the following output. If you see this output, you know that Maven is available and ready to be used.
This tutorial explains a step-by-step tutorial on how to install and set up the below environments.
- windows
- Linux
- Mac OS
Gradle is a Java and Android project build automation tool.
More projects are adopting this tool during development now that Android Studio supports integration with Gradle.
Gradle requires Java to be installed. It needs JDK version 8 at least.
First, check whether Java is installed or not using the below command.
You can also check install maven tutorial
Unix has an SDKMAN online tool to manage different versions of packages.
It provides SDK commands to install.
On the shell or bash terminal, Run the below command.
7.1.1 is the latest version, you can use a different version.
Configure environment variables like below
Gradle installation was done with a homebrew tool.
It is simple and easy to do with the below command.
How to install Gradle on windows
-
First, download the latest Gradle distribution file from gradle download🔗
-
Unzip to a local drive, d:\gradle
-
Create an environment variable in windows GRADLE_HOME=d:\gradle
-
Change or update the PATH environment variable to add Gradle home
- Open the terminal and you can able to run the Gradle command.