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Thread: Help with Swing

  1. #1
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    Default Help with Swing

    I am trying to make a calculator. I am just trying to setup the GUI first. The problem I am having is that I want the JTextField to be the full width of the pane above all the JButtons. I want the double zero button to take up the space of two buttons horizontally in the bottom left
    corner. I want the enter button to take up the space of two Jbuttons vertically in the bottom right hand corner. Here is a pic of what my UI looks like right now:
    javakeypad.jpg

    Here is my code:
    public class KeypadUse
    {
    	public static void main(String[] args)
    	{
    		Keypad key = new Keypad();
    	}
    }



    import javax.swing.*;
    import java.awt.*;
    import java.awt.event.*;
     
    public class Keypad extends JFrame
    {
    	private JTextField displayTF;
    	private JButton oneB, twoB, threeB, fourB, fiveB, sixB, sevenB, eightB, nineB, zeroB,
    				doubleZeroB, plusB, minusB, enterB;
     
    	public Keypad()
    	{
    		setTitle("Keypad");
    		Container pane = getContentPane();
    		pane.setLayout(new GridLayout(5, 4));
     
    		displayTF = new JTextField(20);
    		oneB = new JButton();
    		twoB = new JButton();
    		threeB = new JButton();
    		fourB = new JButton();
    		fiveB = new JButton();
    		sixB = new JButton();
    		sevenB = new JButton();
    		eightB = new JButton();
    		nineB = new JButton();
    		zeroB = new JButton();
    		doubleZeroB = new JButton();
    		plusB = new JButton();
    		minusB = new JButton();
    		enterB = new JButton();
     
    		pane.add(displayTF);
    		pane.add(minusB);
    		pane.add(nineB);
    		pane.add(eightB);
    		pane.add(sevenB);
    		pane.add(plusB);
    		pane.add(sixB);
    		pane.add(fiveB);
    		pane.add(fourB);
    		pane.add(enterB);
    		pane.add(threeB);
    		pane.add(twoB);
    		pane.add(oneB);
    		pane.add(zeroB);
    		pane.add(doubleZeroB);
     
    		setSize(500,500);
    		setDefaultCloseOperation(EXIT_ON_CLOSE);
    		setVisible(true);
    	}
     
    }

    what I was thinking is that maybe there is a way to put a "place holder" to take up a full row and then I can resize my textfield. But I am
    stumped on the buttons.

    thanks in advance!


  2. #2
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    Default Re: Help with Swing

    use gridbag layout!! that will surely help!
    click here to know more!

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