Editeur JAVA

import java.io.*;
public static main (){
public static Aff_HW(){
String test="Hello World";
System.out.println("Mon premier prog java dit :"+test);
}
}

init:
deps-jar:
Created dir: C:\Documents and Settings\Sébastien Gérard\JavaApplication2\build\classes
Compiling 1 source file to C:\Documents and Settings\Sébastien Gérard\JavaApplication2\build\classes
C:\Documents and Settings\Sébastien Gérard\JavaApplication2\src\javaapplication2\Main.java:2: 'class' or 'interface' expected
public static main (){
C:\Documents and Settings\Sébastien Gérard\JavaApplication2\src\javaapplication2\Main.java:8: 'class' or 'interface' expected
}
C:\Documents and Settings\Sébastien Gérard\JavaApplication2\src\javaapplication2\Main.java:9: 'class' or 'interface' expected
3 errors
BUILD FAILED (total time: 2 seconds)

import java.io.*;

public class Aff_HW(){

 public static void main (){ 
  String test="Hello World"; 
  System.out.println("Mon premier prog java dit :"+test); 
 }
 
}

//import java.io.*; inutile il me semble

public class Aff_HW
{
    private void Trace(String T)
    {
        System.out.println("Mon premier prog java dit :"+T);
    }
    
    private void MonProg()
    {
      String test="Hello World";
      Trace(test);
    }

    public static void main(String args[]) 
    {    
        Aff_HW test = new Aff_HW();
        test.MonProg();
    }
}

public class MaClasse
{
      public static void main(String args[])
      {
              System.out.print("Hello world !");
      }
}

System.out.println();

void java.io.PrintStream.PrintLn(String x);