Basic encapsulation of Java exception handling __java

The following is my basic encapsulation of exception, the next exception to inherit this base class, continue to expand. Give everyone an unusual preliminary writing.

Package jp.co.yachiyobank.inf.com.frw.baseExp;

Import Java.io.PrintStream;
Import Java.io.PrintWriter;

public class Baseexception extends exception{

 private static final long serialversionuid = 1L;
 
 private throwable throwable;
&NBSP
 /**
  *クラスのコンストラクタ
  * @param なし
  */
 public baseexception () {
  super ();
 }
 
 /**
  *クラスのコンストラクタ
  * @param msgエラーメッセージ
  */
 public Baseexception (String msg) {
  super (msg);
 &NBSP
 
 
 /**
  *クラスのコンストラクタ
  * @param msgエラーメッセージ
  * @ param throwable
  */
 public baseexception (String msg,throwable throwable) {
  super ( msg,throwable);
 }
 
 /**
  *
  * @param なし
  */
 public throwable getexception () {
& Nbsp; throwable=super.getcause ();
    
  return throwable
 .}

/**
*
* @param なし
*/
public void Printstacktrace () {
Super.printstacktrace ();
}

/**
*
* @param printstream
*/
public void Printstacktrace (PrintStream printstream) {
Super.printstacktrace (PrintStream);
}

/**
*
* @param printwriter
*/
public void Printstacktrace (PrintWriter printwriter) {
Super.printstacktrace (PrintWriter);

}

}