title: How to call variable for calculate? Java Jframe
body: <pre><code>int tmp = Integer.parseInt(jtmp.getText());
  int tmp2 = Integer.parseInt(jCalc.getText());
  String tmp3 = jSymbol.getText()); //The symbol is *
  jCalc.setText("");
  jCalcKalkulator.setText(String.valueOf(tmp + tmp3 + tmp2));
  </code></pre>
  
  <p>I want make tmp * tmp2 but with call variable from a textfield. Thanks.</p>