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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class ClassCastException - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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java.lang
Class ClassCastException

java.lang.Object
  |
  +--java.lang.Throwable
        |
        +--java.lang.Exception
              |
              +--java.lang.RuntimeException
                    |
                    +--java.lang.ClassCastException

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public class ClassCastException

extends RuntimeException

Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance. For example, the following code generates a ClassCastException:

     Object x = new Integer(0);
     System.out.println((String)x);
 

Since:

JDK1.0

See Also:

Serialized Form

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Constructor Summary

ClassCastException()           Constructs a ClassCastException with no detail message.

ClassCastException(String s)           Constructs a ClassCastException with the specified detail message.

 

Methods inherited from class java.lang.Throwable

fillInStackTrace, getLocalizedMessage, getMessage, printStackTrace, printStackTrace, printStackTrace, toString

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Constructor Detail

ClassCastException

public ClassCastException()

Constructs a ClassCastException with no detail message.

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ClassCastException

public ClassCastException(String s)

Constructs a ClassCastException with the specified detail message.

Parameters:

s - the detail message.

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