errorframe.java

主要是对串口驱动的的一些控制源码！！！ 在下载javacomm20-win32.zip后就可以使用。

package de.fhm.jkf.launch.cl;

import java.awt.BorderLayout;
import java.io.PrintWriter;
import java.io.StringWriter;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

/**
 * $Log: ErrorFrame.java,v $
 * Revision 1.1  2003/01/16 13:10:18  mwulff
 * initial version
 *
 *
 * @author Theodor Willax
 *
 * <br><br><center><table border="1" width="80%"><hr>
 * <strong><a href="http://jkf.sourceforge.net">The JKF Project</a></strong>
 * <p>
 * Copyright (C) 2002 by Theodor Willax
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library 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
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the <a href="http://www.gnu.org/copyleft/lesser.html">
 * GNU Lesser General Public License</a> along with this library; if not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA  02111-1307  USA
 * <hr></table></center>
 *
 */
class ErrorFrame extends JFrame {
	
	/**
	 * The exception this <code>ErrorFrame</code> was built from.
	 */
	private Exception exception = null;
	
	/**
	 * Creates an new <code>ErrorFrame</code> an prints the
	 * stack trace inside it.
	 * 
	 * @param e the <code>Exception</code> which's information is displayed.
	 */
	public ErrorFrame(Exception e) {
		exception = e;
		setTitle("JKF Launcher Error");
		JTextArea txt = new JTextArea(25, 80);
		txt.append(e.getMessage() + Character.LINE_SEPARATOR);
		txt.append(getStackTrace());
		txt.setEditable(false);
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		getContentPane().add(new JScrollPane(txt), BorderLayout.SOUTH);
		pack();
	}

	/**
	 * Advises the <code>Exception</code> to print it's
	 * stack trace.
	 */
	public void printStackTrace() {
		exception.printStackTrace();
	}
	
	/**
	 * Returns the stack trace from this <code>Exception</code>
	 * as <code>String</code>.
	 * 
	 * @return The stack trace as <code>String</code>.
	 */
	public String getStackTrace() {
		StringWriter stringWriter = new StringWriter();
		PrintWriter writer = new PrintWriter(stringWriter);
		exception.printStackTrace(writer);
		writer.close();
		String s = stringWriter.toString();
		try { stringWriter.close(); } catch (Exception ignore) {};
		return s;
	}
}