Java Sandbox Environment

A Docker-based Java development environment for experimenting with Java standard library and third-party libraries. This sandbox comes pre-configured with:

• Java 17 (Eclipse Temurin)
• Gradle for dependency management
• Popular libraries:
  • OkHttp for HTTP requests
  • Jackson for JSON processing
  • Lombok for reducing boilerplate
  • JUnit for testing

Getting Started

1. Build the Docker image:

docker build -t java-sandbox .

2. Run the container:

docker run -d --name java-sandbox -v $(pwd):/app java-sandbox

3. Execute Java code inside the container:

docker exec -it java-sandbox gradle run

Development Workflow

1. Write your Java code in the src/main/java/com/sandbox directory
2. Add any new dependencies to build.gradle
3. Rebuild the container if you modify the build.gradle
4. Use the provided HttpExample.java as a template for your experiments

Example Code

The project includes a sample HttpExample.java that demonstrates:

• Making HTTP GET requests
• Making HTTP POST requests with JSON body
• Using OkHttp client
• Basic error handling

Tips

• The container stays running, so you can execute multiple commands
• Use docker exec -it java-sandbox /bin/bash to get a shell inside the container
• Add new dependencies in build.gradle as needed
• Use gradle clean to clean the build directory
• Use gradle build to compile and run tests
• Use gradle dependencies to view the dependency tree