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Thread: JButton open new window

  1. #1
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    Default JButton open new window

    Been sitting here at my computer for about 13 hours and I think my eyes are bleeding.
    I found a little gui editor I love called GuiGenie.
    It works perfect for creating the window with the buttons and all that good stuff.
    The problem is i want to click a button in my first menu and have it open my other menu i made.
    I just starting programming 4 weeks ago so I'm a complete noob.
    I have a feeling its messing up because of the main methods but I have no idea and 13 hours of sitting here trying millions of things is making me go crazy : )
    here is what i got so far
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import javax.swing.event.*;
     
    public class MyPanel extends JPanel {
        private JTextField How;
        private JLabel jcomp2;
        private JLabel jcomp3;
        private JButton jcomp4;
     
        public MyPanel() {
            //construct components
            How = new JTextField (1);
            jcomp2 = new JLabel ("How long were you parked?");
            jcomp3 = new JLabel ("Minutes");
            jcomp4 = new JButton ("openNewWindow");
     
            //adjust size and set layout
            setPreferredSize (new Dimension (315, 85));
            setLayout (null);
     
            //add components
            add (How);
            add (jcomp2);
            add (jcomp3);
            add (jcomp4);
     
            //set component bounds (only needed by Absolute Positioning)
            How.setBounds (245, 50, 60, 25);
            jcomp2.setBounds (35, 30, 185, 50);
            jcomp3.setBounds (250, 30, 60, 20);
            jcomp4.setBounds (0, 0, 315, 25);
     
    		   jcomp4.addActionListener( new ActionListener()
            {
                public void actionPerformed(ActionEvent e)
                {
     
                }
            });
        }
     
     
        public static void main (String[] args) {
            JFrame frame = new JFrame ("MyPanel");
            frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
            frame.getContentPane().add (new MyPanel());
            frame.pack();
            frame.setVisible (true);
        }
    }

    When the button is pressed, I want it to open this new window

    //Generated by GuiGenie - Copyright (c) 2004 Mario Awad.
    //Home Page http://guigenie.cjb.net - Check often for new versions!
     
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import javax.swing.event.*;
     
    public class MyPanel2 extends JPanel {
        private JButton jcomp1;
        private JButton jcomp2;
        private JButton jcomp3;
        private JTextField jcomp4;
     
        public MyPanel2() {
            //construct components
            jcomp1 = new JButton ("test1");
            jcomp2 = new JButton ("test2");
            jcomp3 = new JButton ("test3");
            jcomp4 = new JTextField (5);
     
            //adjust size and set layout
            setPreferredSize (new Dimension (395, 156));
            setLayout (null);
     
            //add components
            add (jcomp1);
            add (jcomp2);
            add (jcomp3);
            add (jcomp4);
     
            //set component bounds (only needed by Absolute Positioning)
            jcomp1.setBounds (20, 45, 100, 25);
            jcomp2.setBounds (135, 60, 100, 25);
            jcomp3.setBounds (260, 35, 100, 25);
            jcomp4.setBounds (105, 115, 100, 25);
        }
     
     
        public static void main (String[] args) {
            JFrame frame = new JFrame ("MyPanel");
            frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
            frame.getContentPane().add (new MyPanel2());
            frame.pack();
            frame.setVisible (true);
        }
    }

    If anyone could help I would appreciate it greatly!!
    I have a lot of respect for you pros out there because if you are a pro at this, you are probably smarter than 99.9% of the world.
    This stuff hurts my brain.


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: JButton open new window

    i want to click a button in my first menu and have it open my other menu i made.
    For the program to execute a method in response to a click on a button, the button needs to have a listener added to it. So first you should work on getting that to work.

    Where do you want the MyPanel2 class to be viewed when it is created? In a new JFrame or where? It has to be added to a container that displays on the screen. A JPanel does not display by itself.

    BTW The varaible names don't reflect the purpose and usage of the components and makes the code harder to read: jcompX ??? Why not give them meaningful names: testBtn1, openBtn etc
    Last edited by Norm; June 30th, 2012 at 06:52 AM.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
    Junior Member
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    Default Re: JButton open new window

    1. for the class with the JButton put "implements MouseListener" after it says "extends JPanel" and import the mouse listener class
    2. in the constructor write, this.addMouseListener(this); and for your button write myButton.addMouseListener(this); replacing myButton with whatever yours is called.
    3. then in the actionPerformedMouseClicked method that you must have because you're implementing MouseListener, have a check for the button. to see if its the one you want to make open the other menu, would look something like this, "if(e.getComponent().equals(myButton)) //open menu;
    4. Not sure if you want a whole new window or just to replace whats in your JFrame, if you want a whole new window in the if statement mentioned above instantiate the class that extends JFrame holds your other menu, it would look something like the first one. If you want the Panel to be switched just change what panel is displayed in the original JFrame

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