Calculator

I'm trying to make a calculator.

I know how to handle it if the user hits 1 and + and 1 and then equals, but how do I get it to keep storing the values if the user enters 1+1 * 3 / 2 = (read (1+1) * 3)/2)?

Code java:

---

package calculator;
 
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
 
public class MyCalculator extends JFrame {
 
	private JButton zero, one, two, three, four, five, six, seven, eight, nine, times,
	plus, minus, divide, clear, equals, decimal, percent;
	private JTextField numbers;
	private JPanel panel;
 
	public MyCalculator()
	{
		super("Basic Calculator");
		setVisible(true);
		panel = new JPanel();
		panel.setVisible(true);
		zero = new JButton("0");
		panel.add(zero);
		zero.setLocation(160, 160);
		zero.setVisible(true);
		one = new JButton("1");
		panel.add(one);
		one.setLocation(190, 160);
		one.setVisible(true);
		two = new JButton("2");
		panel.add(two);
		two.setLocation(220, 160);
		two.setVisible(true);
		numbers = new JTextField(12);
		panel.add(numbers);
		numbers.setLocation(60, 60);
		numbers.setVisible(true);
		numbers.setText("0");
		zero.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "0";
				numbers.setText(values);
			}
 
		});
		one.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "1";
				numbers.setText(values);
			}
 
		});
 
		two.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "2";
				numbers.setText(values);
			}
 
		});
	}
}

---

Code java:

---

package calculator;
 
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
 
public class MyCalculator extends JFrame {
 
	private JButton zero, one, two, three, four, five, six, seven, eight, nine, times,
	plus, minus, divide, clear, equals, decimal, percent;
	private JTextField numbers;
	private JPanel panel;
 
	public MyCalculator()
	{
		super("Basic Calculator");
		setVisible(true);
		panel = new JPanel();
		panel.setVisible(true);
		zero = new JButton("0");
		panel.add(zero);
		zero.setLocation(160, 160);
		zero.setVisible(true);
		one = new JButton("1");
		panel.add(one);
		one.setLocation(190, 160);
		one.setVisible(true);
		two = new JButton("2");
		panel.add(two);
		two.setLocation(220, 160);
		two.setVisible(true);
		numbers = new JTextField(12);
		panel.add(numbers);
		numbers.setLocation(60, 60);
		numbers.setVisible(true);
		numbers.setText("0");
                three = new JButton("3");
              panel.add(three);
three.setVisible(true);
three.setLocation(160, 260);
four = new JButton("4");
panel.add(four);
four.setVisible(true);
four.setLocation(190, 260);
five = new JButton("5");
panel.add(five);
five.setVisible(true);
five.setLocation(220, 260);
six = new JButton("6");
panel.add(six);
six.setVisible(true);
six.setLocaiton(160, 300);
 
		zero.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "0";
				numbers.setText(values);
			}
 
		});
		one.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "1";
				numbers.setText(values);
			}
 
		});
 
		two.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "2";
				numbers.setText(values);
			}
 
		});
 
	three.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "3";
				numbers.setText(values);
			}
 
		});
 
	four.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "4";
				numbers.setText(values);
			}
 
		});
 
	five.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "5";
				numbers.setText(values);
			}
 
		});
 
	six.addActionListener(new ActionListener() {
 
			@Override
			public void actionPerformed(ActionEvent e) {
				// TODO Auto-generated method stub
				String values = numbers.getText();
				values = values + "6";
				numbers.setText(values);
			}
 
		});
	}
 
public static void main(String[] args)
{
MyCalculator mc = new MyCalculator();
}
}

---

Code java:

---

public class MyCalculator extends JFrame implements WindowListener{
 
    private JButton zero, one, two, three, four, five, six, seven, eight, nine, times,
    plus, minus, divide, clear, equals, decimal, percent;
    private JTextField numbers;
    private JPanel panel;
 
    public MyCalculator()
    {
        setTitle("Basic Calculator");
       setVisible(true);
        panel = new JPanel();
       add(panel);
        panel.setVisible(true);
        zero = new JButton("0");
        panel.add(zero);
        zero.setLocation(260, 160);
 
        zero.setVisible(true);
        System.out.println(  zero.getLocation());
        System.out.println(zero.getLocationOnScreen());
        one = new JButton("1");
        panel.add(one);
        one.setLocation(190, 160);
        one.setVisible(true);
        two = new JButton("2");
        panel.add(two);
        two.setLocation(220, 160);
        two.setVisible(true);
        numbers = new JTextField(12);
      panel.add(numbers);
        numbers.setLocation(60, 60);
        numbers.setVisible(true);
        numbers.setText("0");
                three = new JButton("3");
              panel.add(three);
three.setVisible(true);
three.setLocation(160, 260);
four = new JButton("4");
panel.add(four);
four.setVisible(true);
four.setLocation(190, 260);
five = new JButton("5");
panel.add(five);
five.setVisible(true);
five.setLocation(220, 260);
six = new JButton("6");
panel.add(six);
six.setVisible(true);
six.setLocation(160, 300);
 
 
 
        zero.addActionListener(new ActionListener() {
 
            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                String values = numbers.getText();
                values = values + "0";
                numbers.setText(values);
            }
 
        });
        one.addActionListener(new ActionListener() {
 
            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                String values = numbers.getText();
                values = values + "1";
                numbers.setText(values);
            }
 
        });
 
        two.addActionListener(new ActionListener() {
 
            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                String values = numbers.getText();
                values = values + "2";
                numbers.setText(values);
            }
 
        });
 
    three.addActionListener(new ActionListener() {
 
            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                String values = numbers.getText();
                values = values + "3";
                numbers.setText(values);
            }
 
        });
 
    four.addActionListener(new ActionListener() {
 
            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                String values = numbers.getText();
                values = values + "4";
                numbers.setText(values);
            }
 
        });
 
    five.addActionListener(new ActionListener() {
 
            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                String values = numbers.getText();
                values = values + "5";
                numbers.setText(values);
            }
 
        });
 
    six.addActionListener(new ActionListener() {
 
            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                String values = numbers.getText();
                values = values + "6";
                numbers.setText(values);
            }
 
        });
    this.setContentPane(panel);
  //  setDefaultCloseOperation(EXIT_ON_CLOSE);
    }
 
public static void main(String[] args)
{
MyCalculator mc = new MyCalculator();
 
}
 
@Override
public void windowOpened(WindowEvent e) {
	// TODO Auto-generated method stub
 
}
 
@Override
public void windowClosing(WindowEvent e) {
	// TODO Auto-generated method stub
	JFrame frame = new JFrame();
	int x = JOptionPane.showConfirmDialog(frame, "Are you sure you want to exit?", "Exiting", JOptionPane.QUESTION_MESSAGE);
if (x == JOptionPane.YES_OPTION)
{
	System.exit(0);
}
 
else
{
	setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
}
}
 
@Override
public void windowClosed(WindowEvent e) {
	// TODO Auto-generated method stub
 
}
 
@Override
public void windowIconified(WindowEvent e) {
	// TODO Auto-generated method stub
 
}
 
@Override
public void windowDeiconified(WindowEvent e) {
	// TODO Auto-generated method stub
 
}
 
@Override
public void windowActivated(WindowEvent e) {
	// TODO Auto-generated method stub
 
}
 
@Override
public void windowDeactivated(WindowEvent e) {
	// TODO Auto-generated method stub
 
}
}

---

Ok, somehow I lost my text, but I was gonna say, how do you get everything nicely in a layout?

I had it all written out but then I accidentally exited my browser somehow and lost all that I typed.

I've looked at the help for layouts and still don't get how it works so nicely. Is there a CustomLayout or something where I can defer from a certain pattern if I need to?

What kind of layout is best for making a calculator?

I would recommend using a GridBagLayout. It gives you the flexibility to put items in a pseudo-grid while leaving out some of the more mundane tasks of trying to properly size and align everything.

You could also create a Custom Layout if you wanted to, though I think this is over-kill and completely unnecessary here.

You've asked several questions here, none of which are specific enough to be answerable really. This isn't the first time you've done that.

I suggest you read through this and try again: How To Ask Questions The Smart Way

Break your problem up into smaller pieces. Tackle each small piece independently, one at a time. Ask specific questions with code that is specific to each question.