java.lang
Class Throwable

java.lang.Object
  java.lang.Throwable

Direct Known Subclasses:

Error, Exception

public class Throwable
extends Object

The Throwable class is the superclass of all errors and exceptions in the Java language. Only objects that are instances of this class (or of one of its subclasses) are thrown by the Java Virtual Machine or can be thrown by the Java throw statement. Similarly, only this class or one of its subclasses can be the argument type in a catch clause.

Instances of two subclasses, Error and Exception, are conventionally used to indicate that exceptional situations have occurred. Typically, these instances are freshly created in the context of the exceptional situation so as to include relevant information (such as stack trace data).

Here is one example of catching an exception:

     try {
         int a[] = new int[2];
         a[4];
     } catch (ArrayIndexOutOfBoundsException e) {
         System.out.println("exception occurred");
     }
 

Since:

JDK1.0

Version:

1.44, 02/02/00

Author:

unascribed, Helge Böhme

Available on JControl Devices:

all

Constructor Summary

Throwable()
Constructs a new Throwable with null as its error message string.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, notifyAll, wait

Constructor Detail

Throwable

public Throwable()

Constructs a new Throwable with null as its error message string.