Change the color of panel using PopupMenu.

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Home » Java Home » GUI Home » Change the color of panel using PopupMenu.

A D V E R T I S E M E N T

Title	Change the color of panel using PopupMenu.
Author	K.Ramesh
Author Email	ramesh_cdm [at] hotmail.com
Description	This program is used to change the color of the panel. If you selecting a panel it will show popupmenu in which u can select a color.The popup menu will show all the color except the selected panel color.
Category	Java » GUI
Hits	387963
Code	Select and Copy the Code
import java.awt.; import java.awt.event.; import javax.swing.*; public class PanelColor extends JFrame implements ActionListener { Container cont; String namestr[]={"Green","Blue","Red","Pink","Gray","Yellow","Cyan","Magenta","b lack"}; Color colorstr[]={Color.green,Color.blue,Color.red,Color.pink,Color.gray,Color.y ellow,Color.cyan,Color.magenta,Color.black}; JPanel[] panel=new JPanel[namestr.length]; JMenuItem[] menuitem=new JMenuItem[namestr.length]; JPanel jp; JPopupMenu jpop; PanelColor() { cont=getContentPane(); cont.setLayout(new GridLayout(3,3)); jpop=new JPopupMenu(); for(int i=0;i<namestr.length;i++) { panel[i]= new JPanel(); cont.add(panel[i]); panel[i].setBackground(colorstr[i]); panel[i].addMouseListener(new mousehandler()); } for(int i=0;i<namestr.length;i++) { menuitem[i]=new JMenuItem(namestr[i]); jpop.add(menuitem[i]); menuitem[i].addActionListener(this); } setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } class mousehandler extends MouseAdapter { public void mouseReleased(MouseEvent mouseevent) { if(mouseevent.isPopupTrigger()) { jpop.show(mouseevent.getComponent(),mouseevent.getX(),mouseevent.getY()); } } public void mousePressed(MouseEvent mouseevent) { jpop.removeAll(); Object obj=mouseevent.getSource(); if(obj instanceof JPanel) { jp=(JPanel) obj; Color c=jp.getBackground(); for(int i=0;i<namestr.length;i++) { if(!c.equals(colorstr[i])) { jpop.add(menuitem[i]); } } } } } public void actionPerformed(ActionEvent actionevent) { String s=actionevent.getActionCommand(); for(int i=0;i<colorstr.length;i++) if(s.equals(namestr[i])) { jp.setBackground(colorstr[i]); setTitle(namestr[i]); } } public static void main(String args[]) { PanelColor men=new PanelColor(); men.setSize(400,400); men.setTitle("PanelColor"); men.show(); } }

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