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// Throwable.java - Superclass for all exceptions.

/* Copyright (C) 1998, 1999  Cygnus Solutions

   This file is part of libgcj.

This software is copyrighted work licensed under the terms of the
Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
details.  */

package java.lang;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.Serializable;
import java.io.OutputStreamWriter;

/**
 * @author Tom Tromey <tromey@cygnus.com>
 * @date October 30, 1998 
 */

/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
 * "The Java Language Specification", ISBN 0-201-63451-1
 * Status: Sufficient for compiled code, but methods applicable to
 * bytecode not implemented.  JDK 1.1.
 */

public class Throwable implements Serializable
{
  public native Throwable fillInStackTrace ();

  public String getLocalizedMessage ()
  {
    return getMessage ();
  }

  public String getMessage ()
  {
    return detailMessage;
  }

  public void printStackTrace ()
  {
    printStackTrace (System.err);
  }

  public void printStackTrace (PrintStream ps)
  {
    printStackTrace (new PrintWriter(new OutputStreamWriter(ps)));
  }
  
  public native void printStackTrace (PrintWriter wr);
  
  public Throwable ()
  {
    detailMessage = null;
    fillInStackTrace ();
  }

  public Throwable (String message)
  {
    detailMessage = message;
    fillInStackTrace ();
  }

  public String toString ()
  {
    return ((detailMessage == null)
	    ? getClass().getName()
	    : getClass().getName() + ": " + getMessage ());
  }

  // Name of this field comes from serialization spec.
  private String detailMessage;

  private byte stackTrace[];
}