Class Summary |
Boolean |
The Boolean class wraps a value of the primitive type
boolean in an object. |
Byte |
The Byte class wraps a value of primitive type byte
in an object. |
Character |
The Character class wraps a value of the primitive
type char in an object. |
Class<T> |
|
Double |
The Double class wraps a value of the primitive type
double in an object. |
Float |
The Float class wraps a value of primitive type float in
an object. |
Integer |
The Integer class wraps a value of the primitive type int
in an object. |
Long |
The Long class wraps a value of the primitive type long in an object. |
Math |
The class Math contains methods for performing basic
numeric operations. |
Number |
The abstract class Number is the superclass of classes
Byte , Double , Float ,
Integer , Long , and Short . |
Object |
Class Object is the root of the class hierarchy. |
Runtime |
Every Java application has a single instance of class
Runtime that allows the application to interface with
the environment in which the application is running. |
Short |
The Short class wraps a value of primitive type short in an object. |
String |
The String class represents character strings. |
StringBuffer |
A string buffer implements a mutable sequence of characters. |
StringBuilder |
A mutable sequence of characters. |
System |
The System class contains several useful class fields
and methods. |
Thread |
A thread is a thread of execution in a program. |
ThreadGroup |
|
Throwable |
All exceptions and errors extend this class. |
Void |
The Void class is an uninstantiable placeholder class to hold a
reference to the Class object representing the Java keyword
void. |
Exception Summary |
ArithmeticException |
Thrown when an exceptional arithmetic condition has occurred. |
ArrayIndexOutOfBoundsException |
Thrown to indicate that an array has been accessed with an
illegal index. |
ArrayStoreException |
Thrown to indicate that an attempt has been made to store the
wrong type of object into an array of objects. |
ClassCastException |
Thrown to indicate that the code has attempted to cast an object
to a subclass of which it is not an instance. |
ClassNotFoundException |
Thrown when an application tries to load in a class through its
string name using the forName method in class Class
but no definition for the class with the specified name could be found. |
Exception |
The class Exception and its subclasses are a form of
Throwable that indicates conditions that a reasonable
application might want to catch. |
IllegalAccessException |
Thrown when an application tries to load in a class,
but the currently executing method does not have access to the
definition of the specified class, because the class is not public
and in another package. |
IllegalArgumentException |
Thrown to indicate that a method has been passed an illegal or
inappropriate argument. |
IllegalMonitorStateException |
Thrown to indicate that a thread has attempted to wait on an
object's monitor or to notify other threads waiting on an object's
monitor without owning the specified monitor. |
IllegalStateException |
|
IllegalThreadStateException |
Thrown to indicate that a thread is not in an appropriate state
for the requested operation. |
IndexOutOfBoundsException |
Thrown to indicate that an index of some sort (such as to an array,
to a string, or to a vector) is out of range. |
InstantiationException |
Thrown when an application tries to create an instance of a class
using the newInstance method in class
Class , but the specified class object cannot be
instantiated because it is an interface or is an abstract class. |
InterruptedException |
Thrown when a thread is waiting, sleeping, or otherwise paused for
a long time and another thread interrupts it. |
NegativeArraySizeException |
Thrown if an application tries to create an array with negative size. |
NullPointerException |
Thrown when an application attempts to use null in a
case where an object is required. |
NumberFormatException |
Thrown to indicate that the application has attempted to convert
a string to one of the numeric types, but that the string does not
have the appropriate format. |
RuntimeException |
RuntimeException is the superclass of those
exceptions that can be thrown during the normal operation of the
Java Virtual Machine. |
SecurityException |
Thrown by the system to indicate a security violation. |
StringIndexOutOfBoundsException |
Thrown by the charAt method in class
String and by other String
methods to indicate that an index is either negative or greater
than or equal to the size of the string. |
UnsupportedOperationException |
Thrown to indicate that the requested operation is not supported. |
Error Summary |
AbstractMethodError |
Thrown when an application tries to call an abstract method. |
Error |
An Error is a subclass of Throwable
that indicates serious problems that a reasonable application
should not try to catch. |
ExceptionInInitializerError |
Thrown to indicate that a class has some dependency on another
class; however, the latter class has incompatibly changed after the
compilation of the former class. |
IllegalAccessError |
|
IncompatibleClassChangeError |
|
InternalError |
Thrown to indicate some unexpected internal error has occurred in
the Java Virtual Machine. |
LinkageError |
Thrown to indicate that a class has some dependency on another
class; however, the latter class has incompatibly changed after the
compilation of the former class. |
NoClassDefFoundError |
Thrown if the Java Virtual Machine tries to load in the
definition of a class (as part of a normal method call or
as part of creating a new instance using the new
expression) and no definition of the class could be found. |
NoSuchMethodError |
|
OutOfMemoryError |
Thrown when the Java Virtual Machine cannot allocate an object
because it is out of memory, and no more memory could be made
available by the garbage collector. |
StackOverflowError |
|
ThreadDeath |
This is a special Error, which isn't reported by the
VM if uncaught. |
UnsatisfiedLinkError |
Thrown if the Java Virtual Machine cannot find an appropriate
native-language definition of a method declared native. |
VerifyError |
CLDC: Thrown when the "verifier" detects that a class file, though well
formed, contains some sort of internal inconsistency or security problem. |
VirtualMachineError |
Thrown to indicate that the Java Virtual Machine is broken or has
run out of resources necessary for it to continue operating. |