How to create java executable jar file like software [Executable Jar File]

Create java executable jar file:

1.open cmd.exe (command prompt) for creating jar file

jar cvfm MyJarName.jar manifest.txt *.class

2. All the class file with main class in the same folder with 

manifest.txt file

File name=manifest.txt 

Main-Class: main_class_name 

NOte- if class file have package then [package_name.main_class_name]

Main-Class: com.democlass