move up or move down the contents in a row(texboxes,comboboxes etc i)

> and i am thinking as i will take jpanels and add the textfields and comboboxes on the jpanel and move the jpanel up or down as required.

Very good strategy. Now all you'll need is a simple class to do the management of the Panels, like a kinda model. This way, you will change the panel order in the model, and then update your view (where you display the panels) by rebuilding it taking information from the model. This how most Swing components are designed.

Moving the panels up and down would require you to obtain the required panel, remove it from the model and then re-insert it at the row above it. Here is some skeletal code

// this assumes moveIndex >= 1. You would to account for such a condition

JPanel panel = someModel.getPanelAt( moveIndex );

someModel.removePanelAt( moveIndex );

someModel.insertPanelAt( moveIndex - 1);

panelDisplay.rebuildUsingModel();

Here is an implementation of a such a model

http://www.geocities.com/icewalker2g/downloads/PanelModel.java

ICE

icewalker2ga at 2007-7-13 0:22:18 >

Here is a complete code example making use of the PanelModel you've downloaded. Just select a panel and click Move Up or Move Down to move the panel up or down. The major code concentration should be on the movePanel( ) and layoutPanels( ) methods

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.border.*;

import javax.swing.table.*;

import java.io.*;

import java.util.*;

public class PanelMoveExample extends JPanel {

public PanelModel model;

public JPanel selectedPanel, central;

public JButton moveUp, moveDown;

private int DOWN = 1, UP = 2;

public PanelMoveExample() {

super( new BorderLayout() );

model = new PanelModel();

createPanels();

moveUp = new JButton("Move Up");

moveUp.addActionListener( new ActionListener() {

public void actionPerformed(ActionEvent e) {

movePanel(UP);

}

});

moveDown = new JButton("Move Down");

moveDown.addActionListener( new ActionListener() {

public void actionPerformed(ActionEvent e) {

movePanel(DOWN);

}

});

JPanel butPanel = new JPanel( new FlowLayout(FlowLayout.RIGHT) );

butPanel.add(moveUp);

butPanel.add(moveDown);

add(butPanel, BorderLayout.NORTH);

}

public void layoutPanels() {

central.removeAll();

for(int i = 0; i < model.getSize(); i++) {

central.add( model.getPanel(i) );

}

central.validate();

central.repaint();

}

public void createPanels() {

if(central != null) {

remove(central);

}

central = new JPanel( new GridLayout(0,1,5,10) );

for(int i = 0; i < 5; i++) {

JPanel panel = new JPanel();

panel.addMouseListener( new MouseAdapter() {

public void mouseClicked(MouseEvent e) {

JPanel thisPanel = (JPanel)e.getSource();

JPanel oldPanel;

if(selectedPanel != null) {

oldPanel = selectedPanel;

oldPanel.setBorder( new MatteBorder(1,1,1,1, Color.black) );

oldPanel.setBackground(null);

}

selectedPanel = thisPanel;

selectedPanel.setBorder( new MatteBorder(1,1,1,1,Color.red) );

selectedPanel.setBackground( new Color(220,220,230) );

}

});

panel.setBorder( new MatteBorder(1,1,1,1, Color.black) );

panel.setToolTipText("Click To Select");

panel.add( new JLabel("Selectable Panel " + (i+1))) ;

//for(int x = 0; x < 3; x++) {

//panel.add( new JLabel("Item " + (x+1) ) );

//}

model.addPanel( panel );

}

layoutPanels();

add(central, BorderLayout.CENTER);

}

public void movePanel(int direction) {

if(selectedPanel == null) {

return;

}

if(direction == DOWN) {

if( model.getPanelIndex(selectedPanel) == (model.getSize() - 1)) {

return;

}

int panelIndex = model.getPanelIndex( selectedPanel );

model.removePanel(selectedPanel);

model.insertPanelAt(selectedPanel, panelIndex + 1);

} else {

if( model.getPanelIndex(selectedPanel) == 0) {

return;

}

int panelIndex = model.getPanelIndex( selectedPanel );

model.removePanel(selectedPanel);

model.insertPanelAt(selectedPanel, panelIndex - 1);

}

layoutPanels();

}

public static void main(String[] args) {

JFrame frame = new JFrame("Panel Move Example");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.getContentPane().add( new PanelMoveExample() );

frame.pack();

frame.setLocationRelativeTo(null);

frame.setVisible(true);

}

}

ICE

icewalker2ga at 2007-7-13 0:22:18 >

> getSize() in panelModel can't override getSize() in java.awt.component;

PanelModel is class that does not even extend java.awt.Component so such an error should not be thrown.

I compile and run the code using JCreator and this error does not show, because it should not. Unless you have modified the code for PanelModel to extend a subclass of Component, then you should not get such an error.

Be sure to check your configuratiions for the compiler you are using and also ensure you have not made PanelModel extend JPanel or some other subclass of Component. It should stand alone.

Also the code will run if you have precompiled the class before making and changes that caused the error to be thrown.

ICE

icewalker2ga at 2007-7-13 0:22:18 >

Once again I believe the problem is with how you are compiling the code.

1. Dont copy and paste the code into another file, keep it in a separate file with the same name as the class.

2. Place the file in the same folder as all your other source files and ensure your ide creates the class files where they are supposed be.

3. If necessary, edit the source file to include the necessary package information if you are using packages ie package com.something;

4. Do not edit it the class to extend any other class especially Component or any of its subclasses

From all indications, your problem is with the compilation. You could also try creating a new class with a different name and transfer the methods to that class, probably one at a time, and compile each time until you can identify which methods are causing the problems and then rename them or fix them accordingly.

ICE

icewalker2ga at 2007-7-13 0:22:19 >