打包可执行的jar

mkdir hello
vi hello/HelloWorld.java

package hello;

public class HelloWorld {
    
    public static void main(String[] args) {
        System.out.println("hello, world!");
    }
    
}

javac hello/HelloWorld.java
#测试HelloWorld
java -cp . hello.HelloWorld

Manifest-Version: 1.0 
Created-By: 1.0 (Jar-Execution-Package)
Main-Class: hello.HelloWorld
Class-Path: .

jar cvmf manifest.mf hello.jar hello

java -jar hello.jar
>hello, world!