chainedexception.java

一个java工作流引擎

package org.jbpm.util.lang;

import java.io.*;

public class ChainedException extends Exception {

  private Throwable cause = null;

  public ChainedException() {
    super();
  }

  public ChainedException(String msg) {
    super(msg);
  }

  public ChainedException(Throwable cause) {
    super(cause.getMessage());
    this.cause = cause;
  }

  public ChainedException(String msg, Throwable cause) {
    super(msg);
    this.cause = cause;
  }

  public Throwable getCause() {
    return cause;
  }

  public void printStackTrace() {
    super.printStackTrace();
    if (cause != null) {
      System.err.println("caused by: " + cause);
    }
  }

  public void printStackTrace(PrintStream s) {
    super.printStackTrace(s);
    if (cause != null) {
      s.println("caused by: ");
      cause.printStackTrace(s);
    }
  }

  public void printStackTrace(PrintWriter s) {
    super.printStackTrace(s);
    if (cause != null) {
      s.println("caused by: ");
      cause.printStackTrace(s);
    }
  }
}