ChainedRuntimeException


1   package xpetstore.util;
2   
3   
4   /**
5    * Use this class to support chained exceptions in jdk1.3
6    *
7    * @author Isabelle Therrien
8    */
9   public class ChainedRuntimeException
10      extends RuntimeException  
11  {
12      //~ Instance fields --------------------------------------------------------
13  
14      private Throwable   cause = null;
15  
16      //~ Constructors -----------------------------------------------------------
17  
18      public ChainedRuntimeException(  )
19      {
20          super(  );
21      }
22  
23      public ChainedRuntimeException( String   message )
24      {
25          super( message );
26      }
27  
28      public ChainedRuntimeException( String      message,
29                                      Throwable   cause )
30      {
31          super( message );
32          this.cause = cause;
33      }
34  
35      public ChainedRuntimeException( Throwable   cause )
36      {
37          super( "no message" );
38          this.cause = cause;
39      }
40  
41      //~ Methods ----------------------------------------------------------------
42  
43      public Throwable   getCause(  )
44      {
45          return cause;
46      }
47  
48      public String   toString(  )
49      {
50          if ( cause == null )
51          {
52              return super.toString(  );
53          }
54          else
55          {
56              return super.toString(  ) + "  <---- Caused by: " + cause.toString(  ) + " ---->";
57          }
58      }
59  
60      public void printStackTrace(  )
61      {
62          super.printStackTrace(  );
63  
64          if ( cause != null )
65          {
66              System.err.println( "<---- Caused by:" );
67              cause.printStackTrace(  );
68              System.err.println( "---->" );
69          }
70      }
71  
72      public void printStackTrace( java.io.PrintStream   ps )
73      {
74          super.printStackTrace( ps );
75  
76          if ( cause != null )
77          {
78              ps.println( "<---- Caused by:" );
79              cause.printStackTrace( ps );
80              ps.println( "---->" );
81          }
82      }
83  
84      public void printStackTrace( java.io.PrintWriter   pw )
85      {
86          super.printStackTrace( pw );
87  
88          if ( cause != null )
89          {
90              pw.println( "<---- Caused by:" );
91              cause.printStackTrace( pw );
92              pw.println( "---->" );
93          }
94      }
95  }
96
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