slaamz guls and guys!

can any body tell ,how to validate input to check whether it in Integer only?? it shouldnot be in Double, Long and float in type..... i am writting simple code for simple calculator.... plz reply me fast if any body knows...


You can call the Integer.parseInt(String) method and if it throws an exception then it is not an int.

thank you ...i have done it

st1=JOptionPane.showInputDialog("Enter Value for 'x'");
       st2=JOptionPane.showInputDialog("Enter Value for 'y'");

      int x= Integer.parseInt(st1);
      int y= Integer.parseInt(st2);

        int sum = x+y;

       JOptionPane.showMessageDialog(null,"Sum of x and y is" +sum);

it throws exception as well. but i want to throw my own exception.

Do you know how to use try-catch?

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