Create a jar package instance

Today, I tried to create executable jar files. Specifically: first, create a project folder jartest and create a hello package in the jartest directory. Next, follow these steps: 1. Write the hello. Java (your own class name) file under the "hello" directory. The sample content is as follows: Package hello;
Public class Hello {
Public static void main (string ARGs []) {
System. Out. println ("Hello world! ");
}
} 2. compile and generate the hello. Class file. 3. Create a manifest. MF file in the directory at the same level as Hello (the name is unlimited. The sample content is as follows: Main-class: Hello. hello, this file is the most important. The key points are: m (must be capitalized) Ain-C (must be capitalized) lass :( must have a space) package name. class Name (you must press Enter) 4. Run the command jar cvfm. jar manifest. mf Hello/generate. jar5. Test and run Java-jar. jar6. output result: Hello world! The complete operation process is as follows: ========================================================== ============ D: \ Program Files \ Java \ SRC \ jartest \ Hello> javac hello. javad: \ Program Files \ Java \ SRC \ jartest \ Hello> Cd .. d: \ Program Files \ Java \ SRC \ jartest> jar cvfm. jar manifest. mf Hello/
Manifest)
Added: Hello/(read = 0) (write = 0) (stored 0%)
Added: Hello/Hello. Class (read = 422) (write = 289) (compressed by 31%)
Added: Hello/Hello. Java (read = 136) (write = 108) (compressed by 20%) D: \ Program Files \ Java \ SRC \ jartest> JAVA-jar A. Jar
Hello world! D: \ Program Files \ Java \ SRC \ jartest >=========================== =============================== after compilation, you can set hello. java deletion.