import java.io.*; //java girdi cikti sinifini cagir
import javax.swing.*;

class characterE
 {
      public static void main(String args[])
      {
          char b1,b2;
          b1='\u222B';   //integral
          b2='\u00B2';
          char b4='\u221E';
          String s=""+b1+"(x"+b2+"+ y"+b2+") dx";
          JOptionPane.showMessageDialog(null,s," character programming",JOptionPane.PLAIN_MESSAGE);
       }
 }
