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## Uses of Package
java.lang

Packages that use java.lang
java.awt |
java.io | Provides for system input and output through data streams, serialization and the file system.
java.lang | Provides classes that are fundamental to the design of the Java programming language.
java.lang.ref | Provides reference-object classes, which support a limited degree of interaction with the garbage collector.
java.lang.reflect | Provides classes and interfaces for obtaining reflective information about classes and objects.
java.math |
java.net | Provides the classes for implementing networking applications.
java.security | Provides the classes and interfaces for the security framework.
java.security.acl | The classes and interfaces in this package have been superseded by classes in the java.security package.
java.security.cert | Provides classes and interfaces for parsing and managing certificates.
java.security.spec | Provides classes and interfaces for key specifications and algorithm parameter specifications.
java.text | Provides classes and interfaces for handling text, dates, numbers, and messages in a manner independent of natural languages.
java.text.resources |
java.util | Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).
java.util.jar | Provides classes for reading and writing the JAR (Java ARchive) file format, which is based on the standard ZIP file format with an optional manifest file.
java.util.zip | Provides classes for reading and writing the standard ZIP and GZIP file formats.
javax.microedition.io |

Classes in java.lang used by java.awt
Object Class `Object` is the root of the class hierarchy.

Classes in java.lang used by java.io
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`.
Comparable This interface imposes a total ordering on the objects of each class that implements it.
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.
SecurityException Thrown by the security manager to indicate a security violation.
String The `String` class represents character strings.
StringBuffer A string buffer implements a mutable sequence of characters.
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.
Byte The Byte class is the standard wrapper for byte values.
Character The Character class wraps a value of the primitive type `char` in an object.
Character.Subset Instances of this class represent particular subsets of the Unicode character set.
Character.UnicodeBlock A family of character subsets representing the character blocks defined by the Unicode 2.0 specification.
Class Instances of the class `Class` represent classes and interfaces in a running Java application.
ClassFormatError Thrown when the Java Virtual Machine attempts to read a class file and determines that the file is malformed or otherwise cannot be interpreted as a class file.
ClassLoader The class `ClassLoader` is an abstract class.
ClassNotFoundException Thrown when an application tries to load in a class through its string name using: The `forName` method in class `Class`.
CloneNotSupportedException Thrown to indicate that the `clone` method in class `Object` has been called to clone an object, but that the object's class does not implement the `Cloneable` interface.
Comparable This interface imposes a total ordering on the objects of each class that implements it.
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.
IncompatibleClassChangeError Thrown when an incompatible class change has occurred to some class definition.
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 using the `interrupt` method in class `Thread`.
LinkageError Subclasses of `LinkageError` indicate that a class has some dependency on another class; however, the latter class has incompatibly changed after the compilation of the former class.
Long The Long class wraps a value of the primitive type `long` in an object.
NoSuchFieldException Signals that the class doesn't have a field of a specified name.
NoSuchMethodException Thrown when a particular method cannot be found.
Number The abstract class `Number` is the superclass of classes `Byte`, `Double`, `Float`, `Integer`, `Long`, and `Short`.
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.
Package `Package` objects contain version information about the implementation and specification of a Java package.
Process The `Runtime.exec` methods create a native process and return an instance of a subclass of `Process` that can be used to control the process and obtain information about it.
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.
SecurityException Thrown by the security manager to indicate a security violation.
SecurityManager The security manager is a class that allows applications to implement a security policy.
Short The Short class is the standard wrapper for short values.
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.
ThreadGroup A thread group represents a set of threads.
ThreadLocal This class provides ThreadLocal variables.
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.lang.ref
IllegalArgumentException Thrown to indicate that a method has been passed an illegal or inappropriate argument.
InterruptedException Thrown when a thread is waiting, sleeping, or otherwise paused for a long time and another thread interrupts it using the `interrupt` method in class `Thread`.
Object Class `Object` is the root of the class hierarchy.

Classes in java.lang used by java.lang.reflect
ArrayIndexOutOfBoundsException Thrown to indicate that an array has been accessed with an illegal index.
Class Instances of the class `Class` represent classes and interfaces in a running Java application.
ClassLoader The class `ClassLoader` is an abstract class.
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.
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.
NegativeArraySizeException Thrown if an application tries to create an array with negative size.
Object Class `Object` is the root of the class hierarchy.
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 security manager to indicate a security violation.
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.math
Comparable This interface imposes a total ordering on the objects of each class that implements it.
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.
String The `String` class represents character strings.

Classes in java.lang used by java.net
Class Instances of the class `Class` represent classes and interfaces in a running Java application.
ClassLoader The class `ClassLoader` is an abstract class.
ClassNotFoundException Thrown when an application tries to load in a class through its string name using: The `forName` method in class `Class`.
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.
Package `Package` objects contain version information about the implementation and specification of a Java package.
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.security
Class Instances of the class `Class` represent classes and interfaces in a running Java application.
ClassLoader The class `ClassLoader` is an abstract class.
ClassNotFoundException Thrown when an application tries to load in a class through its string name using: The `forName` method in class `Class`.
Cloneable A class implements the `Cloneable` interface to indicate to the `Object.clone()` method that it is legal for that method to make a field-for-field copy of instances of that class.
CloneNotSupportedException Thrown to indicate that the `clone` method in class `Object` has been called to clone an object, but that the object's class does not implement the `Cloneable` interface.
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.
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 security manager to indicate a security violation.
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.security.acl
Cloneable A class implements the `Cloneable` interface to indicate to the `Object.clone()` method that it is legal for that method to make a field-for-field copy of instances of that class.
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.security.cert
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.security.spec
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.text
Cloneable A class implements the `Cloneable` interface to indicate to the `Object.clone()` method that it is legal for that method to make a field-for-field copy of instances of that class.
Comparable This interface imposes a total ordering on the objects of each class that implements it.
Exception The class `Exception` and its subclasses are a form of `Throwable` that indicates conditions that a reasonable application might want to catch.
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.
String The `String` class represents character strings.
StringBuffer A string buffer implements a mutable sequence of characters.
Throwable The `Throwable` class is the superclass of all errors and exceptions in the Java language.

Classes in java.lang used by java.text.resources
Object Class `Object` is the root of the class hierarchy.
String The `String` class represents character strings.

Classes in java.lang used by java.util
ClassLoader The class `ClassLoader` is an abstract class.
Cloneable A class implements the `Cloneable` interface to indicate to the `Object.clone()` method that it is legal for that method to make a field-for-field copy of instances of that class.
Comparable This interface imposes a total ordering on the objects of each class that implements it.
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 java.util.jar
Cloneable A class implements the `Cloneable` interface to indicate to the `Object.clone()` method that it is legal for that method to make a field-for-field copy of instances of that class.
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.util.zip
Cloneable A class implements the `Cloneable` interface to indicate to the `Object.clone()` method that it is legal for that method to make a field-for-field copy of instances of that class.
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.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.

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