Package java.lang

Contains basic classes defined by the Java^TM specifications.

See:
Description

Interface Summary

Cloneable	Interface to indicate the clone method is supported by a class.
Runnable	Interface for classes which support a run method.

Class Summary

Boolean	Class to represent a boolean as an immutable object.
Character	Class to represent a char as an immutable object.
Class	Class information about an object.
Double	Class to represent a double as an immutable object.
Float	Class to represent a float as an immutable object.
Integer	Class to represent an int as an immutable object.
Long	Class to represent a long as an immutable object.
Math	Implements math library methods.
Object	The root class of all other classes.
String	An object representing an immutable character string.
StringBuffer	Class representing a mutable character string.
StringBuilder	Class representing a mutable character string.
System	Library of system level methods.
Thread	Class to represent and manage a thread of execution.
Throwable	The root class of all errors and exceptions.

Exception Summary

ArithmeticException	Exception thrown when an arithmetic error occurs.
ArrayIndexOutOfBoundsException	Exception thrown when an array index is out of bounds.
ArrayStoreException	Exception thrown when an attempt is made to store a reference in an array when the type of the referenced object is not compatible with the type of the array.
ClassCastException	Exception thrown when a casting operation fails.
CloneNotSupportedException	Exception thrown when the clone method is called for an object that doesn't support cloning.
Exception	Base class for exceptions that applications can commonly handle and recover from.
IllegalArgumentException	Exception thrown when an argument to a method has an illegal value.
IllegalMonitorStateException	Exception thrown when a thread synchronization primitives are not used as intended.
IllegalThreadStateException	Exception thrown if a thread is not in the correct state to perform the requested operation.
IndexOutOfBoundsException	Exception thrown if an index is not in the valid range for the requested operation.
InterruptedException	Exception thrown when an inactive Thread becomes active because it was interrupted.
NegativeArraySizeException	Exception thrown if a negative size is specified when creating an array.
NoSuchMethodException	Exception thrown when an attempt is made to execute a method which doesn't exist.
NullPointerException	Exception thrown if an attempt is made to use a null reference.
RuntimeException	Base class for all application related exceptions that are detected at run-time.
UnsupportedOperationException	Exception thrown if an attempt is made to execute a byte code the virtual machine does not support.

Error Summary

Error	Base class for exceptions that are errors that applications normally cannot recover from.
InternalError	Exception thrown if the virtual machine encounters an error which is due to a problem internal to the virtual machine.
LinkageError	Exception thrown if a run-time linking operation fails.
OutOfMemoryError	Exception thrown if there is not enough heap memory to statisfy a memory allocation request.
StackOverflowError	Exception thrown if a Thread does not have sufficient stack space available to complete a method call.
UnknownError	Exception thrown if the virtual machine encounters a problem it isn't able to classify.
UnsatisfiedLinkError	Exception thrown if a run-time linking error occurs, such as inability to find a native method which is being called.
VirtualMachineError	Base class for all virtual machine related exceptions.

Package java.lang Description

Contains basic classes defined by the Java^TM specifications.