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Sep 20th, 2009

JAVA GUI Prob: Components only appear when frame edge clicked.

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This is really frustrating.
Whenever I run this, a blank window frame appears
The components only appear when I click the edge of the frame.

Please check if I did something wrong:

Java Syntax (Toggle Plain Text)
import javax.swing.*;
import java.awt.*;
 
 
/**
 * 
 */
 
 
public class FFGen{
 
 
	public void First(){
 
		/**
		 * @param args
		 */
		JLabel pleaseChooseFFType;
		String[] FlipflopTypes = {"JK", "RS", "D", "T"};; 
		JList FlipflopList;
 
		JLabel pleaseChooseFFNum;
		ButtonGroup FlipflopNumberGroup;
		JRadioButtonMenuItem oneFlipflop;
		JRadioButtonMenuItem twoFlipflop;
 
		JLabel pleaseCheck;
		JCheckBox oneInput;
		JCheckBox oneOutput;
 
		JButton next;
 
		JFrame first;
		JPanel firstConLeft;
		JPanel firstConRight;
 
		FlipflopList = new JList(FlipflopTypes);
		FlipflopList.setVisibleRowCount(1);
		JScrollPane scroller = new JScrollPane(FlipflopList);
 
		pleaseChooseFFType = new JLabel("Type of Flipflop:");
		oneFlipflop = new JRadioButtonMenuItem ("1");
		twoFlipflop = new JRadioButtonMenuItem ("2");
 
		pleaseChooseFFNum = new JLabel("Number of Flipflops:");
		FlipflopNumberGroup = new ButtonGroup();
		FlipflopNumberGroup.add(oneFlipflop);
		FlipflopNumberGroup.add(twoFlipflop);
 
		pleaseCheck = new JLabel("There is an:");
		oneInput = new JCheckBox ("Input");
		oneOutput = new JCheckBox ("Output");
 
		next = new JButton ("Next");
 
		first =  new JFrame();
		first.setSize(250,235);
		first.setVisible(true);
 
		firstConLeft = new JPanel();
		firstConRight = new JPanel();
		firstConRight.setLayout(new GridLayout(9,1,0,0));
		firstConRight.add(pleaseChooseFFType);
		firstConRight.add(scroller);
		firstConRight.add(pleaseChooseFFNum);
		firstConRight.add(oneFlipflop);
		firstConRight.add(twoFlipflop);
		firstConRight.add(pleaseCheck);
		firstConRight.add(oneInput);
		firstConRight.add(oneOutput);
		firstConRight.add(next);
 
		JPanel Empty = new JPanel();
		Empty.setLayout(new GridLayout(1,2));
		Empty.add(firstConLeft);
		Empty.add(firstConRight);
		first.add(Empty);
	}
 
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		FFGen gui = new FFGen();
		gui.First();
	}
 
}
import javax.swing.*;
import java.awt.*;


/**
 * 
 */


public class FFGen{
	
	
	public void First(){
		
		/**
		 * @param args
		 */
		JLabel pleaseChooseFFType;
		String[] FlipflopTypes = {"JK", "RS", "D", "T"};; 
		JList FlipflopList;
		
		JLabel pleaseChooseFFNum;
		ButtonGroup FlipflopNumberGroup;
		JRadioButtonMenuItem oneFlipflop;
		JRadioButtonMenuItem twoFlipflop;
		
		JLabel pleaseCheck;
		JCheckBox oneInput;
		JCheckBox oneOutput;
		
		JButton next;
		
		JFrame first;
		JPanel firstConLeft;
		JPanel firstConRight;
	
		FlipflopList = new JList(FlipflopTypes);
		FlipflopList.setVisibleRowCount(1);
		JScrollPane scroller = new JScrollPane(FlipflopList);
		
		pleaseChooseFFType = new JLabel("Type of Flipflop:");
		oneFlipflop = new JRadioButtonMenuItem ("1");
		twoFlipflop = new JRadioButtonMenuItem ("2");
		
		pleaseChooseFFNum = new JLabel("Number of Flipflops:");
		FlipflopNumberGroup = new ButtonGroup();
		FlipflopNumberGroup.add(oneFlipflop);
		FlipflopNumberGroup.add(twoFlipflop);
		
		pleaseCheck = new JLabel("There is an:");
		oneInput = new JCheckBox ("Input");
		oneOutput = new JCheckBox ("Output");
		
		next = new JButton ("Next");
		
		first =  new JFrame();
		first.setSize(250,235);
		first.setVisible(true);
		
		firstConLeft = new JPanel();
		firstConRight = new JPanel();
		firstConRight.setLayout(new GridLayout(9,1,0,0));
		firstConRight.add(pleaseChooseFFType);
		firstConRight.add(scroller);
		firstConRight.add(pleaseChooseFFNum);
		firstConRight.add(oneFlipflop);
		firstConRight.add(twoFlipflop);
		firstConRight.add(pleaseCheck);
		firstConRight.add(oneInput);
		firstConRight.add(oneOutput);
		firstConRight.add(next);
		
		JPanel Empty = new JPanel();
		Empty.setLayout(new GridLayout(1,2));
		Empty.add(firstConLeft);
		Empty.add(firstConRight);
		first.add(Empty);
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		FFGen gui = new FFGen();
		gui.First();
	}

}

Thank you.

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einjelle

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Sep 20th, 2009

Re: JAVA GUI Prob: Components only appear when frame edge clicked.

It shows up correctly for me without having to click anything. Often, if you need to click, move, resize, or maximize/minimize something for it to show up, you can solve it by using the validate () from the Container class.

http://java.sun.com/javase/6/docs/ap...html#validate()

But again, I did not have to do this. I was able to see your GUI without doing anything.

VernonDozier

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Sep 21st, 2009

Re: JAVA GUI Prob: Components only appear when frame edge clicked.

Click to Expand / Collapse Quote originally posted by VernonDozier ...

It shows up correctly for me without having to click anything. Often, if you need to click, move, resize, or maximize/minimize something for it to show up, you can solve it by using the validate () from the Container class.

http://java.sun.com/javase/6/docs/ap...html#validate()

But again, I did not have to do this. I was able to see your GUI without doing anything.

I know.. It's weird..
Thanks.. I'll try that now.

einjelle

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Sep 21st, 2009

Re: JAVA GUI Prob: Components only appear when frame edge clicked.

Based on the swing Sun example:

java Syntax (Toggle Plain Text)
public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
 
            public void run() {
                //FFGen gui = new FFGen(); 
                new FFGen();
            }
        });
    }
public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {

            public void run() {
                //FFGen gui = new FFGen(); 
                new FFGen();
            }
        });
    }

Write constructor for FFGen:

java Syntax (Toggle Plain Text)
public FFGen() {
        First();
    }
public FFGen() {
        First();
    }

Under Windows XP I have no problem. Same as VernonDozier.
What is your Operating System?

quuba

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Sep 22nd, 2009

Re: JAVA GUI Prob: Components only appear when frame edge clicked.

Click to Expand / Collapse Quote originally posted by quuba ...

based on the swing sun example:
java Syntax (Toggle Plain Text)
public static void main(string[] args) {
        //schedule a job for the event-dispatching thread:
        //creating and showing this application's gui.
        Javax.swing.swingutilities.invokelater(new runnable() {
 
            public void run() {
                //ffgen gui = new ffgen(); 
                new ffgen();
            }
        });
    }
public static void main(string[] args) { //schedule a job for the event-dispatching thread: //creating and showing this application's gui. Javax.swing.swingutilities.invokelater(new runnable() { public void run() { //ffgen gui = new ffgen(); new ffgen(); } }); }
write constructor for ffgen:
java Syntax (Toggle Plain Text)
public ffgen() {
        first();
    }
public ffgen() { first(); }
under windows xp i have no problem. Same as vernondozier.
What is your operating system?

i am also using xp.
I really can't understand why that happens.i've done other gui interfaces before and they run just fine.
But i just can't figure this one out.

I asked a friend of mine to run it in his computer, and he gets the same result as mine.

einjelle

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Sep 22nd, 2009

Re: JAVA GUI Prob: Components only appear when frame edge clicked.

Did adding validate () not do anything?

Try moving lines 57 and 58 from where they are to the BOTTOM of the function. Then add:

Java Syntax (Toggle Plain Text)
first.validate ();
first.validate ();

at the very bottom of the function. See if that makes a difference. I'm not sure it will, but it's worth a shot.

VernonDozier

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Sep 22nd, 2009

Re: JAVA GUI Prob: Components only appear when frame edge clicked.

Click to Expand / Collapse Quote originally posted by VernonDozier ...

Did adding validate () not do anything?

Try moving lines 57 and 58 from where they are to the BOTTOM of the function. Then add:
Java Syntax (Toggle Plain Text)
first.validate ();
first.validate ();
at the very bottom of the function. See if that makes a difference. I'm not sure it will, but it's worth a shot.

0__0 Thanks. It worked!
Thank you.. >(~__~)<

einjelle

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