How do I correct this code to work properly

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Java

I used this code in netbeans to design calculator but the is problem with the division sign immediately I divided the number eg 9 / 8 will give me 1 but when i divided the number eg. 8/2 will give me the correct answer since there is no reminder

private void jBtnDivActionPerformed(java.awt.event.ActionEvent evt) {
      firstnum = Double.parseDouble(jtxtDisplay.getText());
      jtxtDisplay.setText("");
      operations="/"


else if (operations == "/")
   {
       result = firstnum / secondnum;
       answer = String.format("%.0f", result);
       jtxtDisplay.setText(answer);