ClassCastException (Java SE 9 & JDK 9 ) (original) (raw)

• java.lang.Object

• • java.lang.Throwable
  • • java.lang.Exception
      • • java.lang.RuntimeException
          * * java.lang.ClassCastException

• All Implemented Interfaces:
  [Serializable](../../java/io/Serializable.html "interface in java.io")

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:
1.0
See Also:
Serialized Form

• • Constructor Summary

  Constructors

  Constructor	Description
  ClassCastException​()	Constructs a ClassCastException with no detail message.
  ClassCastException​(String s)	Constructs a ClassCastException with the specified detail message.

  • Method Summary

    * ### Methods inherited from class java.lang.[Object](../../java/lang/Object.html "class in java.lang")  
    `[clone](../../java/lang/Object.html#clone--), [equals](../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../java/lang/Object.html#finalize--), [getClass](../../java/lang/Object.html#getClass--), [hashCode](../../java/lang/Object.html#hashCode--), [notify](../../java/lang/Object.html#notify--), [notifyAll](../../java/lang/Object.html#notifyAll--), [wait](../../java/lang/Object.html#wait--), [wait](../../java/lang/Object.html#wait-long-), [wait](../../java/lang/Object.html#wait-long-int-)`  
    * ### Methods inherited from class java.lang.[Throwable](../../java/lang/Throwable.html "class in java.lang")  
    `[addSuppressed](../../java/lang/Throwable.html#addSuppressed-java.lang.Throwable-), [fillInStackTrace](../../java/lang/Throwable.html#fillInStackTrace--), [getCause](../../java/lang/Throwable.html#getCause--), [getLocalizedMessage](../../java/lang/Throwable.html#getLocalizedMessage--), [getMessage](../../java/lang/Throwable.html#getMessage--), [getStackTrace](../../java/lang/Throwable.html#getStackTrace--), [getSuppressed](../../java/lang/Throwable.html#getSuppressed--), [initCause](../../java/lang/Throwable.html#initCause-java.lang.Throwable-), [printStackTrace](../../java/lang/Throwable.html#printStackTrace--), [printStackTrace](../../java/lang/Throwable.html#printStackTrace-java.io.PrintStream-), [printStackTrace](../../java/lang/Throwable.html#printStackTrace-java.io.PrintWriter-), [setStackTrace](../../java/lang/Throwable.html#setStackTrace-java.lang.StackTraceElement:A-), [toString](../../java/lang/Throwable.html#toString--)`

• • Constructor Detail

     * #### ClassCastException  
     public ClassCastException​()  
     Constructs a `ClassCastException` with no detail message.  
     * #### ClassCastException  
     public ClassCastException​([String](../../java/lang/String.html "class in java.lang") s)  
     Constructs a `ClassCastException` with the specified detail message.  
     Parameters:  
     `s` \- the detail message.

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