new JarFile(String name) : JarFile « java.util.jar « Java by API

1. Java by API
2. java.util.jar
3. JarFile

new JarFile(String name)

  
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.jar.JarFile;
import java.util.jar.Pack200;

public class Main {

  public static void main(String[] args) throws Exception {

    OutputStream out = null;

    JarFile f = new JarFile(args[0]);
    Pack200.Packer packer = Pack200.newPacker();
    out = new FileOutputStream(args[0] + ".pack");
    packer.pack(f, out);
    out.close();
  }
}

   
    
  

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