Trucs

public class MyProp {	private static MyProp instance;	private static Object sync = new Object();	private static java.util.Properties prop;	public static MyProp getInstance() {       if (null == instance) {            synchronized(sync) {               if (null == instance) {                   instance = new MyProp();               }           }       }       return instance;   }	   public String getVal(String key){	   return prop.getProperty(key);   }   public java.util.Vector getListProp(){	   java.util.Vector retour = new java.util.Vector();	   for (java.util.Enumeration e = prop.propertyNames() ; e.hasMoreElements() ;) {	         retour.addElement(e.nextElement());	     }	   return retour;   }   public void recharge(String file){	   synchronized(sync){		   try{			   prop.load( new java.io.FileInputStream(file) );		   }catch(java.io.IOException a){			   System.err.println("Fichier properties non trouvé");			   a.printStackTrace();		   }  	   }   }   private MyProp(){	   prop=new java.util.Properties();	   this.recharge("blah.properties");   }}/////////////////////////////////////////////public class MaMain {	public static void main(String[] args) {		System.out.println("coucou :)");		MyProp.getInstance().recharge("blah.properties");		java.util.Vector maListe = MyProp.getInstance().getListProp();		for (java.util.Enumeration e = maListe.elements() ; e.hasMoreElements() ;) 			System.out.println(e.nextElement());		System.out.println("ext2" + MyProp.getInstance().getVal("ext2"));		System.out.println("ext2" + MyProp.getInstance().getVal("ext1"));	}}