import javax.swing.JOptionPane;

public class BPIH2E2
{  public static void main(String[] args) 
         {
         int number1=1;
         int number2=2;
         number1+=number2;
         String s="number1 = "+number1+"   number2= "+number2+"\n";
         number1-=number2;
         s+="number1-= "+ number2+"     = "+number1+"\n";
         number1*=number2;
         s+="number1*= "+ number2+"     = "+number1+"\n";
         number1/=number2;
         s+="number1*= "+ number2+"  = "+number1+"\n";
         JOptionPane.showMessageDialog(null,s);
         }
}



