Sample Java Program Hello.java

Sample Java Program   Hello.java
class Hello
{
public static void main ( String[ ] args )
     {
         System.out.println(“Hello World!”);
     }
}

Execute Program on the Command Interpreter
1. Type  javac Hello.java  to compiler the source code, the Bytecode file
Hello.class  will be generated if there are no errors.
2. Type  java Hello   to run the program
Edit, Compile and Run Cycle

1. Edit the program using Notepad.
2. Save the program to the disk
3. Compile the program with the javac  command.
4. If there are syntax errors, go back to step 1.
5. Run the program with the java command.
6.  If it does not run correctly, go back to step 1.
7. When it runs correctly, quit.
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