asked on

Adding a Container within a Container

Why this coder is not working?
What should i do?

ERROR MESSAGE: "java.lang.IllegalArgumentException: illegal component position"

=============== Code ==================
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;

/**
*
* @author Agbeko Komla
*/
public class StudentSupportServices extends JFrame {
private StudentPanel student;
private CoursePanel course;
private ProfessorPanel professor;
private ExamPanel exam;
private ControlPanel controls;

private Connection connect;

/** Creates a new instance of StudentInformations */
public StudentSupportServices() {

super("Student Support Services");

//These are all JPanels that i create externally
course = new CoursePanel();
student = new StudentPanel();
professor = new ProfessorPanel();
exam = new ExamPanel();
controls = new ControlPanel();

Container studentAndCourseContentPane = getContentPane();
studentAndCourseContentPane.setLayout( new FlowLayout( ) );
studentAndCourseContentPane.add( student ) ;
studentAndCourseContentPane.add( course ) ;

Container professorAndExamContentPane = getContentPane();
professorAndExamContentPane.setLayout( new FlowLayout( ) );
professorAndExamContentPane.add( professor );
professorAndExamContentPane.add( exam );

JLayeredPane rootPane = getLayeredPane(); <=============== ERROR MESSAGE
rootPane.add(studentAndCourseContentPane, BorderLayout.NORTH ) ;
rootPane.add(professorAndExamContentPane , BorderLayout.CENTER );
rootPane.add( controls, BorderLayout.SOUTH );
//Container controlsContenPane = getContentPane();
//controlsContenPane.add(controls, BorderLayout.SOUTH );

pack();
show();
}

public static void main( String [] args )
{

(new StudentSupportServices()).addWindowListener
(
new WindowAdapter()
{
public void windowClosing( WindowEvent e)
{
System.exit( 0 );
}
}
);
}
}

==================
/*
* ControlPanel.java
*
* Created on January 9, 2005, 3:10 AM
*/

package sss;

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;

/**
*
* @author Agbeko Komla
*/
public class ControlPanel extends JPanel
{
private JButton findData,findSchedule, addData, updateData, clear, help;

/** Creates a new instance of ControlPanel */
public ControlPanel()
{
super();
setLayout(new FlowLayout(FlowLayout.RIGHT, 20, 10));
setBorder(new CompoundBorder(
BorderFactory.createLineBorder(Color.BLACK,1),
BorderFactory.createBevelBorder(BevelBorder.RAISED)));

findData = new JButton( "Find" );
//add actionListner later
add(findData);

findSchedule = new JButton( "Schedule" );
//add actionListner later
add(findSchedule);

addData = new JButton( "Add" );
//add actionListner later
add(addData);

updateData = new JButton( "Update" );
//add actionListner later
add(updateData);

clear = new JButton( "Clear" );
//add actionListner later
add(clear);

help = new JButton( "Help" );
//add actionListner later
add(help);
}

}

============================
/*
* Course.java
*
* Created on January 19, 2005, 8:19 AM
*/

package sss;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
/**
*
* @author Agbeko Komla
*/
public class CoursePanel extends JPanel
{

/** Creates a new instance of Course */
public CoursePanel()
{
super();
}

}
========================
/*
* StudentSchedule.java
*
* Created on January 9, 2005, 3:09 AM
*/

package sss;

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;

/**
*
* @author Agbeko Komla
*/
public class ExamPanel extends JPanel
{
/** Creates a new instance of StudentSchedule */
public ExamPanel()
{
super();

}
}
========================
/*
* Professor.java
*
* Created on January 19, 2005, 8:20 AM
*/

package sss;

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

/**
*
* @author Agbeko Komla
*/
public class ProfessorPanel extends JPanel
{

/** Creates a new instance of Professor */
public ProfessorPanel()
{
super();
}

}
====================
/*
* StudentPanel.java
*
* Created on January 9, 2005, 3:09 AM
*/

package sss;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
/**
*
* @author Agbeko Komla
*/
public class StudentPanel extends JPanel
{
private String labels[] =
{"ID:", "Last Name:", "First Name:", "Student Phone:", "Box #:"};

JTextField last, first, id, phone, box;
JTextField fields[] = {id, last, first, phone, box};

/** Creates a new instance of StudentPanel */
public StudentPanel()
{
super();
/*
for(int i = 0; i < fields.length; i++)
{
fields[i] = new JTextField(10);
add( new JLabel( labels[i], JLabel.CENTER ));
add( fields[i] );
}
*/
JPanel p1 = new JPanel( );
//add actionListner later
add(p1);

JPanel p2 = new JPanel( );
//add actionListner later
add(p2);

}

public int getLabelLength()
{
return labels.length;
}
}

zzynx

Same Q as always: At what line do you get that error?

zzynx

Sorry, didn't see the pointer ;°)

zzynx

>> JLayeredPane rootPane = getLayeredPane(); <=============== ERROR MESSAGE

don't you mean

Container cont = getContentPane();

zzynx

This is strange:

Container studentAndCourseContentPane = getContentPane(); // <<<<<<<< 1st time
studentAndCourseContentPane.setLayout( new FlowLayout( ) );
studentAndCourseContentPane.add( student ) ;
studentAndCourseContentPane.add( course ) ;

Container professorAndExamContentPane = getContentPane(); // <<<<<<<<<< 2nd time
professorAndExamContentPane.setLayout( new FlowLayout( ) );
professorAndExamContentPane.add( professor );
professorAndExamContentPane.add( exam );

???

zzynx

Are you aware of the fact that the above equals:

Container c = getContentPane();
c.setLayout( new FlowLayout( ) );
c.add( student ) ;
c.add( course ) ;
c.add( professor );
c.add( exam );

komlaaa

ASKER

I am trying to add studentAndCourseContentPane <<<<<<< #1)
and professorAndExamContentPane <<<<< #2)
to JLayeredPane rootPane = getLayeredPane();

Basically trying to add two container into another one. Not feasable?

zzynx

>> Basically trying to add two container into another one. Not feasable?
Sure.

What are
studentAndCourseContentPane & professorAndExamContentPane ?

I guess you want:

JPanel studentAndCoursePanel = new JPanel();
studentAndCoursePanel.setLayout( new FlowLayout( ) );
studentAndCoursePanel.add( student ) ;
studentAndCoursePanel.add( course ) ;

JPanel professorAndExamPanel = new JPanel();
professorAndExamPanel.setLayout( new FlowLayout( ) );
professorAndExamPanel.add( professor );
professorAndExamPanel.add( exam );

Container c = getContentPane();
c.add(studentAndCourseContentPane, BorderLayout.NORTH ) ;
c.add(professorAndExamContentPane , BorderLayout.CENTER );
c.add( controls, BorderLayout.SOUTH );

zzynx

I think that the content pane of a JFrame uses the BorderLayout by default but if you want to be sure,
you can add:

JPanel studentAndCoursePanel = new JPanel();
studentAndCoursePanel.setLayout( new FlowLayout( ) );
studentAndCoursePanel.add( student ) ;
studentAndCoursePanel.add( course ) ;

JPanel professorAndExamPanel = new JPanel();
professorAndExamPanel.setLayout( new FlowLayout( ) );
professorAndExamPanel.add( professor );
professorAndExamPanel.add( exam );

Container c = getContentPane();
c.setLayout( new BorderLayout() ); // <<<<<<<<<<<<<<<<<<<<<<<< 2B sure
c.add(studentAndCourseContentPane, BorderLayout.NORTH ) ;
c.add(professorAndExamContentPane , BorderLayout.CENTER );
c.add( controls, BorderLayout.SOUTH );

komlaaa

ASKER

This version run fine but the panel are being displayed?
why is that?
=========CODE==========
/*
* StudentInformations.java
*
* Created on January 9, 2005, 3:02 AM
*/

package sss;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
/**
*
* @author Agbeko Komla
*/
public class StudentSupportServices extends JFrame {
private StudentPanel student;
private CoursePanel course;
private ProfessorPanel professor;
private ExamPanel exam;
private ControlPanel controls;

private Connection connect;

/** Creates a new instance of StudentInformations */
public StudentSupportServices() {

super("Student Support Services");

course = new CoursePanel();
student = new StudentPanel();
professor = new ProfessorPanel();
exam = new ExamPanel();
controls = new ControlPanel();

JPanel StudentCourseProfessorExamPanel = new JPanel();
StudentCourseProfessorExamPanel.setLayout(new GridLayout(2,2) );
StudentCourseProfessorExamPanel.add( course );
StudentCourseProfessorExamPanel.add( student );
StudentCourseProfessorExamPanel.add( professor );
StudentCourseProfessorExamPanel.add( exam );

Container c = getContentPane();
c.setLayout( new BorderLayout() );
c.add(StudentCourseProfessorExamPanel, BorderLayout.CENTER ) ;
c.add( controls, BorderLayout.SOUTH );

pack();
show();
}

public static void main( String [] args )
{

(new StudentSupportServices()).addWindowListener
(
new WindowAdapter()
{
public void windowClosing( WindowEvent e)
{
System.exit( 0 );
}
}
);
}
}
====================================
/*
* ControlPanel.java
*
* Created on January 9, 2005, 3:10 AM
*/

package sss;

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;

/**
*
* @author Agbeko Komla
*/
public class ControlPanel extends JPanel
{
private JButton findData,findSchedule, addData, updateData, clear, help;

/** Creates a new instance of ControlPanel */
public ControlPanel()
{
super();
setLayout(new FlowLayout(FlowLayout.RIGHT, 20, 10));
setBorder(new CompoundBorder(
BorderFactory.createLineBorder(Color.BLACK,1),
BorderFactory.createBevelBorder(BevelBorder.RAISED)));

findData = new JButton( "Find" );
//add actionListner later
add(findData);

findSchedule = new JButton( "Schedule" );
//add actionListner later
add(findSchedule);

addData = new JButton( "Add" );
//add actionListner later
add(addData);

updateData = new JButton( "Update" );
//add actionListner later
add(updateData);

clear = new JButton( "Clear" );
//add actionListner later
add(clear);

help = new JButton( "Help" );
//add actionListner later
add(help);
}

}

=============================
/*
* Course.java
*
* Created on January 19, 2005, 8:19 AM
*/

package sss;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

/**
*
* @author Agbeko Komla
*/
public class CoursePanel extends JPanel
{

/** Creates a new instance of Course */
public CoursePanel()
{
JPanel exam = new JPanel();
exam.setLayout( new FlowLayout() );
exam.setBorder(new TitledBorder(new EtchedBorder(),"Just Trying"));
exam.add(new JButton( "Place Holder") );
}

}
===========================
/*
* StudentSchedule.java
*
* Created on January 9, 2005, 3:09 AM
*/

package sss;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.border.*;

/**
*
* @author Agbeko Komla
*/
public class ExamPanel extends JPanel
{
/** Creates a new instance of StudentSchedule */
public ExamPanel()
{
JPanel exam = new JPanel();
exam.setLayout( new FlowLayout() );
exam.setBorder(new TitledBorder(new EtchedBorder(),"Just Trying"));
exam.add(new JButton( "Place Holder") );
}

}

====================================
/*
* Professor.java
*
* Created on January 19, 2005, 8:20 AM
*/

package sss;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

/**
*
* @author Agbeko Komla
*/
public class ProfessorPanel extends JPanel
{

/** Creates a new instance of Professor */
public ProfessorPanel()
{
JPanel exam = new JPanel();
exam.setLayout( new FlowLayout() );
exam.setBorder(new TitledBorder(new EtchedBorder(),"Just Trying"));
exam.add(new JButton( "Place Holder") );
}

}
=========================================
/*
* StudentPanel.java
*
* Created on January 9, 2005, 3:09 AM
*/

package sss;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

/**
*
* @author Agbeko Komla
*/
public class StudentPanel extends JPanel
{
private String labels[] =
{"ID:", "Last Name:", "First Name:", "Student Phone:", "Box #:"};

JTextField last, first, id, phone, box;
JTextField fields[] = {id, last, first, phone, box};

/** Creates a new instance of StudentPanel */
public StudentPanel()
{

for(int i = 0; i < fields.length; i++)
{
fields[i] = new JTextField(10);
add( new JLabel( labels[i], JLabel.CENTER ));
add( fields[i] );
}

}

public int getLabelLength()
{
return labels.length;
}
}

ASKER CERTIFIED SOLUTION

zzynx

membership

Create a free account to see this answer

Signing up is free and takes 30 seconds. No credit card required.

See answer

komlaaa

ASKER

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
/**
*
* @author Agbeko Komla
*/
public class StudentSupportServices extends JFrame {
private StudentPanel student;
private CoursePanel course;
private ProfessorPanel professor;
private ExamPanel exam;
private ControlPanel controls;

private Connection connect;

/** Creates a new instance of StudentInformations */
public StudentSupportServices() {

super("Student Support Services");

course = new CoursePanel();
student = new StudentPanel();
professor = new ProfessorPanel();
exam = new ExamPanel();
controls = new ControlPanel();

JPanel StudentCourseProfessorExamPanel = new JPanel();
StudentCourseProfessorExamPanel.setLayout(new GridLayout(2,2) );
StudentCourseProfessorExamPanel.add( course );
StudentCourseProfessorExamPanel.add( student );
StudentCourseProfessorExamPanel.add( professor );
StudentCourseProfessorExamPanel.add( exam );

Container c = getContentPane();
c.setLayout( new BorderLayout() );
c.add(StudentCourseProfessorExamPanel, BorderLayout.CENTER ) ;
c.add( controls, BorderLayout.SOUTH );

pack();
show(); <<<<<<<<<< I add show here,... no need to apply show in main, I tried that but didn't change much.

}

=====================
Container c = getContentPane();
c.setLayout( new BorderLayout() ); // <<<<<<<<<<<<<<<<<<<<<<<< 2B sure
c.add(studentAndCourseContentPane, BorderLayout.NORTH ) ;
c.add(professorAndExamContentPane , BorderLayout.CENTER );
c.add( controls, BorderLayout.SOUTH );
Makes sens but i don't want the GUI to have that look.

komlaaa

ASKER

>>>I found out why<<<<<<<<<
i am creating another panel intead of the current one
>>>>>> JPanel exam = new JPanel(); <<<< shouldn't be there.

public class ExamPanel extends JPanel
{
/** Creates a new instance of StudentSchedule */
public ExamPanel()
{
JPanel exam = new JPanel();
exam.setLayout( new FlowLayout() );
exam.setBorder(new TitledBorder(new EtchedBorder(),"Just Trying"));
exam.add(new JButton( "Place Holder") );
}

Mick Barry

What does your getLayeredPane() method look like?

komlaaa

ASKER

>What does your getLayeredPane() method look like?
it just like other Container, but i thought that should have the ability to hold other Containers
its name "Layered" means it.

SOLUTION

Mick Barry

membership

Create a free account to see this answer

Signing up is free and takes 30 seconds. No credit card required.

See answer