Create a temporary folder. C:\mywork. Using Notepad or another text editor, create a small Java file HelloWorld.java.
Save your file as HelloWorld.java in C:\mywork. To make sure your file name HeloWorld.java (not HelloWorld.java.txt), first choose “Save as file type.” All files, then type in the file name HelloWorld.java
Run Command Prompt (as follows)
This makes C:\mywork the current directory.
This displays the directory contents. You should see HelloWorld.java among the files.
3. C:\mywork>javac HelloWorld.java
This runs javac.exe, the compiler. You should see nothing but the next system prompt…
javac has created the HelloWorld.class file. You should see HelloWorld.java and HelloWorld.class among the files.
5. C:\mywork>java HelloWorld
This runs the Java interpreter. You should see the program output : Hello, World!
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