JOptionPaneDemo - creating dialog boxes in Java.

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Home » Java Home » GUI Home » JOptionPaneDemo - creating dialog boxes in Java.

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Title	JOptionPaneDemo - creating dialog boxes in Java.
Author	Shambhu Soman
Author Email	shambhu_79 [at] yahoo.com
Description	I am submitting this code so that many aspirants can get some idea of creating dialog boxes in Java.
Category	Java » GUI
Hits	386064
Code	Select and Copy the Code
// code written by Shambhu Soman import java.awt.event.; import javax.swing.; import java.awt.*; public class JOptionPaneDemo extends JFrame implements ActionListener { JLabel lblMessage,lblConfirm,lblInput,lblOption; JButton b1,b2,b3,b4,b5,b6,b7; JPanel p; Icon icon; GridBagLayout gl; GridBagConstraints gbc; public JOptionPaneDemo() { setTitle("JOptionPane's Demo"); lblMessage=new JLabel("Message:"); lblConfirm=new JLabel("Confirm:"); lblInput=new JLabel("Input:"); lblOption=new JLabel("Option:"); //JOptionPane.showMessageDialog() b1=new JButton("Question"); b1.addActionListener(this); b2=new JButton("Error"); b2.addActionListener(this); b3=new JButton("Information"); b3.addActionListener(this); b4=new JButton("Warning"); b4.addActionListener(this); //JOptionPane.showConfirmDialog() b5=new JButton("Confirm"); b5.addActionListener(this); b6=new JButton("Input"); b6.addActionListener(this); b7=new JButton("Option"); b7.addActionListener(this); addWindowListener(new Demo()); p=new JPanel(); gl=new GridBagLayout(); gbc=new GridBagConstraints(); p.setLayout(gl); //putting an icon on the dialog box icon=new ImageIcon("D:\images\cat.gif"); gbc.anchor=GridBagConstraints.WEST; gbc.insets=new Insets(5,5,5,5); gbc.gridx=1; gbc.gridy=1; gl.setConstraints(lblMessage,gbc); p.add(lblMessage); gbc.gridx=2; gl.setConstraints(b1,gbc); p.add(b1); gbc.gridx=3; gl.setConstraints(b2,gbc); p.add(b2); gbc.gridx=4; gl.setConstraints(b3,gbc); p.add(b3); gbc.gridx=5; gl.setConstraints(b4,gbc); p.add(b4); gbc.gridx=1; gbc.gridy=2; gl.setConstraints(lblConfirm,gbc); p.add(lblConfirm); gbc.gridx=2; gl.setConstraints(b5,gbc); p.add(b5); gbc.gridx=1; gbc.gridy=3; gl.setConstraints(lblInput,gbc); p.add(lblInput); gbc.gridx=2; gl.setConstraints(b6,gbc); p.add(b6); gbc.gridx=1; gbc.gridy=4; gl.setConstraints(lblOption,gbc); p.add(lblOption); gbc.gridx=2; gl.setConstraints(b7,gbc); p.add(b7); getContentPane().add(p); setVisible(true); setSize(500,500); } public static void main(String args[]) { new JOptionPaneDemo(); } public int option(int i) { return 0; } public void actionPerformed(ActionEvent ae) { Object src=ae.getSource(); if(src==b1) { JOptionPane.showMessageDialog(this,"This is a Question Dialog","Question",JOptionPane.QUESTION_MESSAGE); return; } else if(src==b2) { JOptionPane.showMessageDialog(this,"This is an error Message","Error",JOptionPane.ERROR_MESSAGE); return; } else if(src==b3) { JOptionPane.showMessageDialog(this,"Information or Plain Message","Information",JOptionPane.INFORMATION_MESSAGE,icon); return; } else if(src==b4) { JOptionPane.showMessageDialog(this,"This is a Warning Message","Warning",JOptionPane.WARNING_MESSAGE); return; } else if(src==b5) { int i=JOptionPane.showConfirmDialog(this,"Confirm Dialog","Confirm",JOptionPane.YES_NO_OPTION); if(i==JOptionPane.YES_OPTION) { option(i); } } else if(src==b6) { JOptionPane.showInputDialog(this,"Enter your name here:"); return; } else if(src==b7) { JOptionPane.showOptionDialog(this,"Sure to Quit","Options",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.QUESTION_MESS AGE,null,null,null); } } class Demo extends WindowAdapter { public void windowClosing(WindowEvent we) { int i=JOptionPane.showConfirmDialog(null,"Sure to Exit","Exit",JOptionPane.YES_NO_CANCEL_OPTION); if(i==JOptionPane.YES_OPTION) { //System.exit(0); Runtime.getRuntime().exit(0); } else if(i==JOptionPane.NO_OPTION) { setDefaultCloseOperation(DO_NOTHING_ON_CLOSE); } else if(i==JOptionPane.CANCEL_OPTION) { setDefaultCloseOperation(DO_NOTHING_ON_CLOSE); } } }; };

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