private void updateEffectiveSize(){
  try {
    int r=Integer.valueOf(rows.getText());
    int c=Integer.valueOf(columns.getText());
    int h=Integer.valueOf(receptiveFieldHeight.getText());
    int w=Integer.valueOf(receptiveFieldWidth.getText());
    effectiveSize.setText((c * w) + "x" + (r * h));
  }
 catch (  NumberFormatException e) {
    effectiveSize.setText("...");
  }
}

private void updateEffectiveSize ( ) { try { int r = Integer . valueOf ( rows . getText ( ) ) ; int c = Integer . valueOf ( columns . getText ( ) ) ; int h = Integer . valueOf ( receptiveFieldHeight . getText ( ) ) ; int w = Integer . valueOf ( receptiveFieldWidth . getText ( ) ) ; effectiveSize . setText ( ( c * w ) + "x" + ( r * h ) ) ; } catch ( NumberFormatException e ) { effectiveSize . setText ( "..." ) ; } }
update the effective size label .
