Java Reference
In-Depth Information
LISTING 11.4
//********************************************************************
// ExceptionScope.java Author: Lewis/Loftus
//
// Demonstrates exception propagation.
//********************************************************************
public class ExceptionScope
{
//-----------------------------------------------------------------
// Catches and handles the exception that is thrown in level3.
//-----------------------------------------------------------------
public void level1()
{
System.out.println("Level 1 beginning.");
try
{
level2();
}
catch (ArithmeticException problem)
{
System.out.println ();
System.out.println ("The exception message is: " +
problem.getMessage());
System.out.println ();
System.out.println ("The call stack trace:");
problem.printStackTrace();
System.out.println ();
}
System.out.println("Level 1 ending.");
}
//-----------------------------------------------------------------
// Serves as an intermediate level. The exception propagates
// through this method back to level1.
//-----------------------------------------------------------------
public void level2()
{
System.out.println("Level 2 beginning.");
level3 ();
System.out.println("Level 2 ending.");
}
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