EXCEPTIONS

The Classes

Exception

 and

RuntimeException

11.5.1

ArithmeticException

: An exceptional arithmetic situation has arisen, such

as an integer division ( 15.16.2) operation with a zero divisor.

ArrayStoreException

: An attempt has been made to store into an array

component a value whose class is not assignment compatible with the compo 

nent type of the array ( 10.10,  15.25.1).

ClassCastException

: An attempt has been made to cast ( 5.4,  15.15) a

reference to an object to an inappropriate type.

IllegalArgumentException

: A method was passed an invalid or inappro 

priate argument or invoked on an inappropriate object. Subclasses of this class

include:

N

IllegalThreadStateException:

 A thread was not in an appropriate

state for a requested operation.

N

NumberFormatException

: An attempt was made to convert a

String

 to a

value of a numeric type, but the

String

 did not have an appropriate format.

IllegalMonitorStateException

: A thread has attempted to wait on

( 20.1.6,  20.1.7,  20.1.8) or notify ( 20.1.9,  20.1.10) other threads waiting

on an object that it has not locked.

IndexOutOfBoundsException

: Either an index of some sort (such as to an

array, a string, or a vector) or a subrange, specified either by two index values

or by an index and a length, was out of range.

NegativeArraySizeException

: An attempt was made to create an array

with a negative length ( 15.9).

NullPointerException

: An attempt was made to use a null reference in a

case where an object reference was required.

SecurityException

: A security violation was detected ( 20.17).

Package

java.util

 defines the following additional standard unchecked runtime

exceptions:

java.util.EmptyStackException

: An attempt was made to access an ele 

ment of an empty stack.

java.util.NoSuchElementException

: An attempt was made to access an

element of an empty vector.

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