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JAVA PROGRAMMING

Java's Built-in Exceptions

Inside the standers packing java.lang , java defines several exception classes . A few have been used by the preceding examples. The most general of these exception are subclasses of the standard type RuntimeException. Since java.lang is implicitly imported in all java programs, most exception derived from RuntimeException are automatically available. Furthermore, they need not be include in any method's

throws list. In the language of java, these are called unchecked exceptions because the unchecked exception defined by java.lang that must be included in a method's throws list if that method can generate one of these exception and does not handle it itself. These are called checked exceptions. Java defines several others types of exception that related to its various class libraries

Java's Unchecked Runtime Exception
Exception	Meaning
ArithmeticException	Arithmetic error, such as divide-by-zero.
ArrayIndexOutOfBoundsException	Array index is out-of-bounds
ArrayStoreException	Assignment to an array element of an incompatible
ClassCastException	Invalid Case
IllegalArgumentException	Illegal argument used to invoke a method
IllegalMonitorStateException	Illegal monitor operation, such as waiting on an unlocked thread.
IllegalStateException	Environment or application is in incorrect state
IllegalThreadStateException	Requested operation not compatible with current thread state.
IndexOutOfBoundsException	Some type of index is out-of-bounds
NegativeArraySizeException	Array created with a negative size
NullPointerException	Invalid use of a null reference
NumberFormatException	Invalid conversion of a string to a numeric format
SecurityException	Attempt to violate security
StringIndexOutOfBounds	Attempt to index outside the bounds of a string
UnsupportedOperationException	An unsupported operation was encountered

Java's Checked Runtime Exception
ClassNotFoundException	Class not found
CloneNotSupportedException	Attempt to clone an object that does not implement the Cloneable interface
IllegalAccessException	Access to a class is denied
InstantiationException	Attempt to create an object of an abstract class or interface
InterruptedException	On thread has been interrupted by another thread
NoSuchFieldException	A requested filed does not exist
NoSuchMethodException	A requested method does not exist


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