Save This Page
Home » openjdk-7 » java » lang » [javadoc | source]
java.lang
public class: ClassNotFoundException [javadoc | source]
java.lang.Object
   java.lang.Throwable
      java.lang.Exception
         java.lang.ReflectiveOperationException
            java.lang.ClassNotFoundException

All Implemented Interfaces:
    Serializable

Direct Known Subclasses:
   

Thrown when an application tries to load in a class through its string name using:

but no definition for the class with the specified name could be found.

As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism. The "optional exception that was raised while loading the class" that may be provided at construction time and accessed via the #getException() method is now known as the cause, and may be accessed via the Throwable#getCause() method, as well as the aforementioned "legacy method."

Fields inherited from java.lang.ReflectiveOperationException:
serialVersionUID
Fields inherited from java.lang.Exception:
serialVersionUID
Constructor:
 public ClassNotFoundException() 
 public ClassNotFoundException(String s) 
    Constructs a ClassNotFoundException with the specified detail message.
    Parameters:
    s - the detail message.
 public ClassNotFoundException(String s,
    Throwable ex) 
    Constructs a ClassNotFoundException with the specified detail message and optional exception that was raised while loading the class.
    Parameters:
    s - the detail message
    ex - the exception that was raised while loading the class
    since: 1.2 -
Method from java.lang.ClassNotFoundException Summary:
getCause,   getException
Methods from java.lang.Throwable:
addSuppressed,   fillInStackTrace,   getCause,   getLocalizedMessage,   getMessage,   getStackTrace,   getStackTraceDepth,   getStackTraceElement,   getSuppressed,   initCause,   printStackTrace,   printStackTrace,   printStackTrace,   setStackTrace,   toString
Methods from java.lang.Object:
clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait
Method from java.lang.ClassNotFoundException Detail:
 public Throwable getCause() 
    Returns the cause of this exception (the exception that was raised if an error occurred while attempting to load the class; otherwise null).
 public Throwable getException() 
    Returns the exception that was raised if an error occurred while attempting to load the class. Otherwise, returns null.

    This method predates the general-purpose exception chaining facility. The Throwable#getCause() method is now the preferred means of obtaining this information.