Swing display Error Message - Java Swing

Java examples for Swing:JDialog

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Description

Swing display Error Message

Demo Code

/*/* w w  w. j  av a  2 s  .c  o  m*/
 * ClientUtils.java
 *
 * Network Embedded Sensor Testbed (NESTbed)
 *
 * Copyright (C) 2006-2007
 * Dependable Systems Research Group
 * School of Computing
 * Clemson University
 * Andrew R. Dalton and Jason O. Hallstrom
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the
 *
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301, USA.
 */
//package com.java2s;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Frame;
import java.io.ByteArrayOutputStream;
import java.io.PrintWriter;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Main {
    public static void displayErrorMessage(Component component, Throwable t) {
        Frame parent = null;

        for (Component c = component; c != null && parent == null; c = c
                .getParent()) {
            if (c instanceof Frame) {
                parent = (Frame) c;
            }
        }

        JDialog dialog = createExceptionDialog(parent, t.getClass()
                .getName(), t);
        dialog.setVisible(true);
    }

    private static JDialog createExceptionDialog(Frame parent,
            String title, Throwable error) {
        ByteArrayOutputStream messageStream = new ByteArrayOutputStream();
        PrintWriter out = new PrintWriter(messageStream);
        error.printStackTrace(out);
        out.close();

        JTextField errorMsg = new JTextField(error.toString());
        JTextArea errorText = new JTextArea(messageStream.toString());
        JScrollPane textPane = new JScrollPane(errorText);

        errorText.setEditable(false);
        errorMsg.setEditable(false);

        textPane.setPreferredSize(new Dimension(500, 400));

        JOptionPane warning = new JOptionPane(textPane,
                JOptionPane.ERROR_MESSAGE);

        JDialog dialog = warning.createDialog(parent, title);
        dialog.getContentPane().add(warning);
        dialog.setResizable(true);

        return dialog;
    }
}

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