Double-click the jar package to execute the program, and double-click the jar package

Double-click the jar package to execute the program, and double-click the jar package

Source File: MyMenuTest. java

Compilation result:

The volumes in C: \ Users \ zhangbz \ Desktop \ demo> javac MyMenuTest. javaC: \ Users \ zhangbz \ Desktop \ demo> dir drive C are not labeled. The serial number of the volume is E637-C45FC: \ Users \ zhangbz \ Desktop \ demo directory <DIR>. <DIR> .. 1,527 MyMenuTest $1. class2014/12/22 1,779 MyMenuTest $2. class2014/12/22 561 MyMenuTest $3. class2014/12/22 534 MyMenuTest $4. class2014/12/22 2,570 MyMenuTest. class2014/12/22 2,884 MyMenuTest. java 6 files, 9,855 bytes, 2 directories, 64,374,337,536 available bytes, C: \ Users \ zhangbz \ Desktop \ demo>

What should I do if n classes are generated after compilation?

Encapsulate a package.

Add the package name in the first line of the source file as follows:

package mymenu;

Run the following command to re-compile:

C:\Users\zhangbz\Desktop\demo>javac -d . MyMenuTest.java

After re-compilation, all the generated class files are saved in the mymenu folder in the current directory.

Then specify the class with the main function executed when double-clicking the jar package:

Add a file in the directory where the mymenu folder is located (the file name is random) to specify the Main-class:

Main-class: mymenu.MyMenuTest

Requirements: ":" must be followed by spaces; the end of a line must be followed by a carriage return, indicating that the end of a line of input is over.

Finally, run the following command to re-package:

jar -cvfm my.jar 1.txt mymenu

Now, you can double-click the jar package to execute the java program.