public class UsingExceptions
1: // Fig. 13.7: UsingExceptions.java
2: // Demonstrating getMessage and printStackTrace from class Exception.
3:
4: public class UsingExceptions
5: {
6: public static void main( String args[] )
7: {
8: try
9: {
10: method1(); // call method1
11: } // end try
12: catch ( Exception exception ) // catch exception thrown in method1
13: {
14: System.err.printf( "%s\n\n", exception.getMessage() );
15: exception.printStackTrace(); // print exception stack trace
16:
17: // obtain the stack-trace information
18: StackTraceElement[] traceElements = exception.getStackTrace();
19:
20: System.out.println( "\nStack trace from getStackTrace:" );
21: System.out.println( "Class\t\tFile\t\t\tLine\tMethod" );
22:
23: // loop through traceElements to get exception description
24: for ( StackTraceElement element : traceElements )
25: {
26: System.out.printf( "%s\t", element.getClassName() );
27: System.out.printf( "%s\t", element.getFileName() );
28: System.out.printf( "%s\t", element.getLineNumber() );
29: System.out.printf( "%s\n", element.getMethodName() );
30: } // end for
31: } // end catch
32: } // end main
33:
34: // call method2; throw exceptions back to main
35: public static void method1() throws Exception
36: {
37: method2();
38: } // end method method1
39:
40: // call method3; throw exceptions back to method1
41: public static void method2() throws Exception
42: {
43: method3();
44: } // end method method2
45:
46: // throw Exception back to method2
47: public static void method3() throws Exception
48: {
49: throw new Exception( "Exception thrown in method3" );
50: } // end method method3
51: } // end class UsingExceptions
52:
53: /**************************************************************************
54: * (C) Copyright 1992-2005 by Deitel & Associates, Inc. and *
55: * Pearson Education, Inc. All Rights Reserved. *
56: * *
57: * DISCLAIMER: The authors and publisher of this book have used their *
58: * best efforts in preparing the book. These efforts include the *
59: * development, research, and testing of the theories and programs *
60: * to determine their effectiveness. The authors and publisher make *
61: * no warranty of any kind, expressed or implied, with regard to these *
62: * programs or to the documentation contained in these books. The authors *
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64: * consequential damages in connection with, or arising out of, the *
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