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/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.runtime;

import java.io.PrintStream;
import java.io.PrintWriter;

/**
 * A checked exception representing a failure.
 * <p>
 * Core exceptions contain a status object describing the 
 * cause of the exception.
 * </p>
 *
 * @see IStatus
 */
public class CoreException extends Exception {

  /**
   * All serializable objects should have a stable serialVersionUID
   */
  private static final long serialVersionUID = 1L;

  /** Status object. */
  private IStatus status;

  /**
   * Creates a new exception with the given status object.  The message
   * of the given status is used as the exception message.
   *
   * @param status the status object to be associated with this exception
   */
  public CoreException(IStatus status) {
    super(status.getMessage());
    this.status = status;
  }

  /**
   * Returns the status object for this exception.
   *
   * @return a status object
   */
  public final IStatus getStatus() {
    return status;
  }

  /**
   * Prints a stack trace out for the exception, and
   * any nested exception that it may have embedded in
   * its Status object.
   */
  public void printStackTrace() {
    printStackTrace(System.err);
  }

  /**
   * Prints a stack trace out for the exception, and
   * any nested exception that it may have embedded in
   * its Status object.
   * 
   * @param output the stream to write to
   */
  public void printStackTrace(PrintStream output) {
    synchronized (output) {
      if (status.getException() != null) {
        output.print(getClass().getName() + "[" + status.getCode() + "]: "); //$NON-NLS-1$ //$NON-NLS-2$
        status.getException().printStackTrace(output);
      } else
        super.printStackTrace(output);
    }
  }

  /**
   * Prints a stack trace out for the exception, and
   * any nested exception that it may have embedded in
   * its Status object.
   * 
   * @param output the stream to write to
   */
  public void printStackTrace(PrintWriter output) {
    synchronized (output) {
      if (status.getException() != null) {
        output.print(getClass().getName() + "[" + status.getCode() + "]: "); //$NON-NLS-1$ //$NON-NLS-2$
        status.getException().printStackTrace(output);
      } else
        super.printStackTrace(output);
    }
  }

}
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