jbuttons and jcombobox didn't show up please help...

[jackwong]

Hey guys, there are two separated questions in this thread
1) The jbuttons or jcombobox didn't show up in my GUI even though I added both of them in my frame. There's no error for this code, just that it doesn't show up in GUI.
2) Do you guys have any open-source for AI-chess? I need it for my current project I tried all the best I could to find an open-source that contains easy,medium,hard but couldn't find any that works with java...

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Calendar;
import java.util.Calendar;

public class chess extends JFrame{
	int x = 0;
	//texts or labels or panels
	private JLabel label1,label2,label3,label4,difficulties,statusbar;
	private JTextField timeF,timeT;
	private JPanel panel,panel1,panel2,panel3,panel4;
	//buttons
	private JButton start,stop,settings, aminutes, bminutes, cminutes, dcustom;
	//combo boxes
	private JComboBox difficulty, color;
	//j frame
	private JFrame frame;
	//lsits for combobox
	private static String[] difflist = {"Easy", "Medium", "Hard"};
	private static String[] colorlist = {"White", "Black"};
	//for timer
public chess (){
	//house keeping stuffs
	JFrame frame = new JFrame("Chess");
    frame.setSize(900,900);
    frame.setVisible(true);
    frame.setResizable(true);
    frame.setLocationRelativeTo(null);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);;
	JPanel panel1 = new JPanel(new GridBagLayout());
	GridBagConstraints c = new GridBagConstraints();
	frame.add(panel1, BorderLayout.CENTER);


	Font f = new Font("sansserif", Font.BOLD, 15);
	
	label1 = new JLabel("Difficulties : ");
	label1.setFont(f);
	label2 = new JLabel("Colour : ");
	label2.setFont(f);
	label3 = new JLabel("Black User's Timer : ");
	label3.setFont(f);
	label4 = new JLabel("White User's Timer : "); 
	label4.setFont(f);
	
	c.insets = new Insets(100,100,800,800);
	c.gridx = 0;
	c.gridy = 0;
	panel1.add(label1,c);
	
	c.insets = new Insets(100,72,700,800);
	c.gridx = 0;
	c.gridy = 0;
	panel1.add(label2, c);
	
	c.anchor = GridBagConstraints.PAGE_END;
	c.insets = new Insets(0,0,400,0);
	c.gridx = 0;
	c.gridy = 0;
	panel1.add(label3, c);
	
	c.anchor = GridBagConstraints.PAGE_END;
	c.insets = new Insets(0,0,200,0);
	c.gridx = 0;
	c.gridy = 0;
	panel1.add(label4, c);
	
	JComboBox diff = new JComboBox(difflist);
	JComboBox color = new JComboBox(colorlist);	
	c.insets = new Insets(100,100,800,600);
	c.gridx = 30;
	c.gridy = 30;

	panel1.add(diff, c);
	frame.add(panel1);
	
	c.insets = new Insets(10,0,0,0);
	c.gridx = 1;
	c.gridy = 2;
	panel1.add(color, c);
	
	statusbar = new JLabel("Status Bar Current State: Default");
	
	JLabel statusbar = new JLabel();
	statusbar.setFont(new Font("Arial",Font.BOLD,25));
	
	JButton start = new JButton("Start");
	JButton stop = new JButton("Stop");
	JButton settings = new JButton("Settings");
	
	c.insets = new Insets(100,100,400,800);
	c.gridx = 10;
	c.gridy = 10;
	panel1.add(start, c);
	
	c.insets = new Insets(10,0,0,0);
	c.gridx = 1;
	c.gridy = 2;
	panel1.add(color, c);
	

}



}

Thanks alot :).

[doWhile]

Read the API for Container: Container (Java Platform SE 6)
Unless you have a specific reason, add the components to a container prior to setting it to visible. In your case, there is no reason to immediately set the JFrame to visible until all components have been added.

[jackwong]

sorry.. i didn't really understand what you meant but yeah i only set the visible at the end after I have added all my components still the combobox/button doesn't show up...
can

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Calendar;
import java.util.Calendar;

public class chess extends JFrame{
	int x = 0;
	//texts or labels or panels
	private JLabel label1,label2,label3,label4,difficulties,statusbar;
	private JTextField timeF,timeT;
	private JPanel panel,panel1,panel2,panel3,panel4;
	//buttons
	private JButton start,stop,settings, aminutes, bminutes, cminutes, dcustom;
	//combo boxes
	private JComboBox difficulty, color;
	//j frame
	private JFrame frame;
	//lsits for combobox
	private static String[] difflist = {"Easy", "Medium", "Hard"};
	private static String[] colorlist = {"White", "Black"};
	//for timer
public chess (){
	//house keeping stuffs
	JFrame frame = new JFrame("Chess");
    frame.setSize(900,900);
    frame.setVisible(true);
    frame.setLocationRelativeTo(null);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);;
	JPanel panel1 = new JPanel(new GridBagLayout());
	GridBagConstraints c = new GridBagConstraints();
	frame.add(panel1, BorderLayout.CENTER);

	statusbar = new JLabel("Status Bar Current State: Default");
	c.insets = new Insets(100,72,700,800);
	c.gridx = 0;
	c.gridy = 0;
	
	Font f = new Font("sansserif", Font.BOLD, 15);
	label1 = new JLabel("Difficulties : ");
	label1.setFont(f);
	label2 = new JLabel("Colour : ");
	label2.setFont(f);
	label3 = new JLabel("Black User's Timer : ");
	label3.setFont(f);
	label4 = new JLabel("White User's Timer : "); 
	label4.setFont(f);
	
	c.anchor = GridBagConstraints.LINE_START;
	c.insets = new Insets(100,100,800,800);
	c.gridx = 0;
	c.gridy = 0;
	panel1.add(label1,c);
	
	c.anchor = GridBagConstraints.LINE_START;
	c.insets = new Insets(100,72,700,800);
	c.gridx = 0;
	c.gridy = 0;
	panel1.add(label2, c);
	
	c.anchor = GridBagConstraints.PAGE_END;
	c.insets = new Insets(0,0,400,0);
	c.gridx = 0;
	c.gridy = 0;
	panel1.add(label3, c);
	
	c.anchor = GridBagConstraints.PAGE_END;
	c.insets = new Insets(0,0,200,0);
	c.gridx = 0;
	c.gridy = 0;
	panel1.add(label4, c);
	
	JComboBox diff = new JComboBox(difflist);
	JComboBox color = new JComboBox(colorlist);	
	c.anchor = GridBagConstraints.LINE_START;
	c.insets = new Insets(100,100,800,600);
	c.gridx = 30;
	c.gridy = 30;

	panel1.add(diff, c);
	frame.add(panel1);
	c.anchor = GridBagConstraints.LINE_START;
	c.insets = new Insets(10,0,0,0);
	c.gridx = 1;
	c.gridy = 2;
	panel1.add(color, c);
	
	statusbar = new JLabel("Status Bar Current State: Default");
	
	JLabel statusbar = new JLabel();
	statusbar.setFont(new Font("Arial",Font.BOLD,25));
	
	JButton start = new JButton("Start");
	JButton stop = new JButton("Stop");
	JButton settings = new JButton("Settings");
	
	c.insets = new Insets(100,100,400,800);
	c.gridx = 10;
	c.gridy = 10;
	panel1.add(start, c);
	
	c.insets = new Insets(10,0,0,0);
	c.gridx = 1;
	c.gridy = 2;
	panel1.add(color, c);
	
	//timer
	timeF = new JTextField(10);
	timeF.setEditable(false);
	timeF.setFont(new Font("Arial",Font.PLAIN,48));
	
	Timer t = new Timer(1000, new Listener());
	t.start();	 
	
	c.gridx = 0;
	c.gridy = 0;
	panel2.add(label3, c);
    frame.setResizable(true);
}

	class Listener implements ActionListener{
		public void actionPerformed(ActionEvent e){
			Font font = new Font("SansSerif",Font.BOLD,20);
			timeF.setText(x+"");
			timeF.setBackground(Color.BLACK);
			timeF.setForeground(Color.GREEN);
			timeF.setFont(font);
			x++;
	
		}
	}
	
}
/*
frame.setVisible(true);
frame.setResizable(true);
frame.setLocationRelativeTo(null);*/

[Tolls]

No you don't.
You set the frame visible in the third line of the 'chess' constructor...then proceed to add stuff to it.