Thread: how to print for-loop output to JTextArea

This code simply prints the even numbers from 0 to 10 which are

0,2,4,6,8,10

If you change the variables first and last to say 20 and 100 respectively then the result will be the even numbers from 20 to 100.

   [COLOR="Black"]private int first = 0;
   private int last = 10;
 
      for(int n = first; n < last; n = n + 2)
      {
         int nex = (first + n) - first;
         System.out.print(nex +"," );
 
      }
      System.out.print(last);[/COLOR]

now I have an interface contains a JTextArea. I want to make a for-loop like the one above which enable me to move the output to JTextArea.

I only know the method setText(String t); but this method only sets the last output from the for-loop to JTextArea which is the case above 10

textarea.setText(textarea.getText() + " " + textToAppend);

You can also use a StringBuilder or StringBuffer to append all the text in the loop and afterwords call setText() with your builder/buffer string rep. (in loops I'd recommend the use of these objects as opposed to string 'addition')

Originally Posted by copeg

textarea.setText(textarea.getText() + " " + textToAppend);

You can also use a StringBuilder or StringBuffer to append all the text in the loop and afterwords call setText() with your builder/buffer string rep. (in loops I'd recommend the use of these objects as opposed to string 'addition')

Thank You ,, I got it.