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Uses of Package
java.lang

Packages that use java.lang

java.io	Provides classes for input and output through data streams.
java.lang	Provides classes that are fundamental to the Java programming language.
java.util	Contains the collection classes, and the date and time facilities.
javax.microedition.io	Classes for the Generic Connection framework.
javax.microedition.lcdui	The UI API provides a set of features for implementation of user interfaces for MIDP applications.
javax.microedition.lcdui.game	The Game API package provides a series of classes that enable the development of rich gaming content for wireless devices.
javax.microedition.media	The MIDP 2.0 Media API is a directly compatible building block of the Mobile Media API (JSR-135) specification.
javax.microedition.midlet	The MIDlet package defines Mobile Information Device Profile applications and the interactions between the application and the environment in which the application runs.
javax.microedition.pki	Certificates are used to authenticate information for secure Connections.
javax.microedition.rms	The Mobile Information Device Profile provides a mechanism for MIDlets to persistently store data and later retrieve it.

Classes in java.lang used by java.io

Exception
The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

Object
Class Object is the root of the class hierarchy.

String
The String class represents character strings.

Throwable
The Throwable class is the superclass of all errors and exceptions in the Java language.

Classes in java.lang used by java.lang

Boolean
The Boolean class wraps a value of the primitive type boolean in an object.

Class
Instances of the class Class represent classes and interfaces in a running Java application.

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.

Double
The Double class wraps a value of the primitive type double in an object.

Error
An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch.

Exception
The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

Float
The Float class wraps a value of primitive type float in an object.

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.

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.

Integer
The Integer class wraps a value of the primitive type int in an object.

InterruptedException
Thrown when a thread is waiting, sleeping, or otherwise paused for a long time and another thread interrupts it.

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.

Object
Class Object is the root of the class hierarchy.

Runnable
The Runnable interface should be implemented by any class whose instances are intended to be executed by a thread.

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.

RuntimeException
RuntimeException is the superclass of those exceptions that can be thrown during the normal operation of the Java Virtual Machine.

String
The String class represents character strings.

StringBuffer
A string buffer implements a mutable sequence of characters.

Thread
A thread is a thread of execution in a program.

Throwable
The Throwable class is the superclass of all errors and exceptions in the Java language.

VirtualMachineError
Thrown to indicate that the Java Virtual Machine is broken or has run out of resources necessary for it to continue operating.

Classes in java.lang used by java.util

Exception
The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

Object
Class Object is the root of the class hierarchy.

Runnable
The Runnable interface should be implemented by any class whose instances are intended to be executed by a thread.

RuntimeException
RuntimeException is the superclass of those exceptions that can be thrown during the normal operation of the Java Virtual Machine.

String
The String class represents character strings.

Throwable
The Throwable class is the superclass of all errors and exceptions in the Java language.

Classes in java.lang used by javax.microedition.io

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.

IllegalArgumentException
Thrown to indicate that a method has been passed an illegal or inappropriate argument.

Object
Class Object is the root of the class hierarchy.

String
The String class represents character strings.

Throwable
The Throwable class is the superclass of all errors and exceptions in the Java language.

Classes in java.lang used by javax.microedition.lcdui

Object
Class Object is the root of the class hierarchy.

Runnable
The Runnable interface should be implemented by any class whose instances are intended to be executed by a thread.

String
The String class represents character strings.

Classes in java.lang used by javax.microedition.lcdui.game

Object
Class Object is the root of the class hierarchy.

Classes in java.lang used by javax.microedition.media

Exception
The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

Object
Class Object is the root of the class hierarchy.

String
The String class represents character strings.

Throwable
The Throwable class is the superclass of all errors and exceptions in the Java language.

Classes in java.lang used by javax.microedition.midlet

Exception
The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

Object
Class Object is the root of the class hierarchy.

String
The String class represents character strings.

Throwable
The Throwable class is the superclass of all errors and exceptions in the Java language.

Classes in java.lang used by javax.microedition.pki

Exception
The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

Object
Class Object is the root of the class hierarchy.

String
The String class represents character strings.

Throwable
The Throwable class is the superclass of all errors and exceptions in the Java language.

Classes in java.lang used by javax.microedition.rms

Exception
The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.

Object
Class Object is the root of the class hierarchy.

String
The String class represents character strings.

Throwable
The Throwable class is the superclass of all errors and exceptions in the Java language.