title: Java Calculator GUI
body: <p>so i want to make this calculator i'm beginner so i dont know how to make calculations using = sign. i want to save first number in for example double temp and then save also second number an when i press = i want program to make proper operation so can you help me on simple language?</p>
  
  <pre><code>    import java.awt.TextField;
      import java.awt.event.ActionEvent;
      import java.awt.event.ActionListener;
  
      import javax.swing.JButton;
      import javax.swing.JFrame;
  
  
      public class Calculator {
                  public static void main(String[] args) {
  
                      JFrame frame = new JFrame("Calculator (BETA)");
                      frame.setSize(223, 250);
  
  
                      final TextField field1 = new TextField();
                      final JButton button1 = new JButton("1");
                      final JButton button2 = new JButton("2");
                      final JButton button3 = new JButton("3");
                      final JButton button4 = new JButton("4");
                      final JButton button5 = new JButton("5");
                      final JButton button6 = new JButton("6");
                      final JButton button7 = new JButton("7");
                      final JButton button8 = new JButton("8");
                      final JButton button9 = new JButton("9");
                      final JButton button0 = new JButton("0");
                      final JButton mul = new JButton("*");
                      final JButton div = new JButton("/");
                      final JButton equal = new JButton("=");
                      final JButton plus = new JButton("+");
                      final JButton minus = new JButton("-");
  
  
                      ActionListener but1 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button1.getText();
  
                              field1.setText(field1.getText() + s1);
                          }
                      };
  
                      button1.addActionListener(but1);
  
                      ActionListener but2 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button2.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button2.addActionListener(but2);
  
                      ActionListener but3 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button3.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button3.addActionListener(but3);
  
                      ActionListener but4 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button4.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button4.addActionListener(but4);
  
                      ActionListener but5 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button5.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button5.addActionListener(but5);
  
                      ActionListener but6 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button6.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button6.addActionListener(but6);
  
                      ActionListener but7 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button7.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button7.addActionListener(but7);
  
                      ActionListener but8 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button8.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button8.addActionListener(but8);
  
                      ActionListener but9 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button9.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button9.addActionListener(but9);
  
                      ActionListener but0 = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                              String s1 = button0.getText();
  
                              field1.setText(field1.getText() + s1);                  }
                      };
  
                      button0.addActionListener(but0);
  
                      ActionListener mult = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
  
                              String num = field1.getText();
                              int i1 = Integer.parseInt(num);
  
                              field1.setText(null);
  
                          }
                      };
  
                      mul.addActionListener(mult);
  
                      ActionListener equals = new ActionListener() {
  
                          @Override
                          public void actionPerformed(ActionEvent arg0) {
                              // TODO Auto-generated method stub
                          String num = field1.getText();
                          int i1 = Integer.parseInt(num);
  
  
  
  
                          }
                      };
  
                      equal.addActionListener(equals);
  
  
  
  
  
  
  
      //Adding Items To Frame And Setting Bounds              
  
                      frame.setLayout(null);
                      field1.setBounds(10, 10, 193, 22);
                      button1.setBounds(10, 52, 43, 37);
                      button2.setBounds(60, 52, 43, 37);
                      button3.setBounds(110, 52, 43, 37);
                      button4.setBounds(10, 95, 43, 37);
                      button5.setBounds(60, 95, 43, 37);
                      button6.setBounds(110, 95, 43, 37);
                      button7.setBounds(10, 138, 43, 37);
                      button8.setBounds(60, 138, 43, 37);
                      button9.setBounds(110, 138, 43, 37);
                      button0.setBounds(10, 181, 43, 37);
                      div.setBounds(60, 181, 43, 37);
                      plus.setBounds(160, 52, 43, 37);
                      mul.setBounds(110, 181, 43, 37);
                      equal.setBounds(160, 138, 43, 80);
                      minus.setBounds(160, 95, 43, 37);
  
  
  
  
  
                      frame.add(field1);
                      frame.add(button1);
                      frame.add(button2);
                      frame.add(button3);
                      frame.add(button4);
                      frame.add(button5);
                      frame.add(button6);
                      frame.add(button7);
                      frame.add(button8);
                      frame.add(button9);
                      frame.add(button0);
                      frame.add(div);
                      frame.add(equal);
                      frame.add(mul);
                      frame.add(plus);
                      frame.add(minus);
  
  
  
  
                      frame.setVisible(true);
                      frame.setLocationRelativeTo(null);
                      frame.setResizable(false);
                  }
  
      }
  </code></pre>