JAR Files

Java Archive files

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JAR Files

JAR (Java ARchive) files bundle multiple class files and resources into a single file.

Code Examples

Creating and running JAR files

java
1
2# Create JAR
3jar cvf app.jar *.class
4
5# Run JAR
6java -jar app.jar
7

Use Cases

  • Application distribution
  • Library packaging
  • Microservices deployment

Common Mistakes to Avoid

  • Missing Main-Class in manifest
  • Classpath issues with JARs