Java+fichier ( xml ou txt)

package Client;

import java.io.*;
import java.util.*;

public class read
{
           String message;

          // class constructor

           public read()
           {

           }

     public void setMessage()
     {

          //create an instance of properties class

          Properties props = new Properties();

          //try retrieve data from file
             try {

             props.load(new FileInputStream("message.properties"));

             message = props.getProperty("message");

             System.out.println(message);
              }

             //catch exception in case properties file does not exist

             catch(IOException e)
             {
             e.printStackTrace();
             }
     }

     public static void main(String[] args)
     {
     //create an instance of greeting2 class

     read gr = new read();

     //call the setMessage() method of the Greeting2 class

     gr.setMessage();

     }
}     

package Client;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;
 
public class read
{ 
	public static void  affiche(){
	
		Properties prop = new Properties();
		read r =new read();
		System.out.println(prop.getProperty("database"));
		
	}
    public static void main( String[] args )
    {
    	Properties prop = new Properties();
    	System.out.println("TEST File0");
    	try {
    		//set the properties value
    		prop.setProperty("Auteur", "amal");
    		prop.setProperty("langue", "en");
    		prop.setProperty("dbpassword", "password");
 
    		//save properties to project root folder
    		prop.store(new FileOutputStream("config.properties"), null);
    		 System.out.println(prop.getProperty("database"));
              System.out.println("TEST File1");
    	} catch (IOException ex) {
    		ex.printStackTrace();
    		System.out.println("TEST File failed ");
        }
    	
    }
}