java.lang |
Provides classes that are fundamental to the design of the Java
programming language. |
Java Source File Name | Type | Comment |
AbstractMethodError.java | Class | Thrown when an application tries to call an abstract method. |
AbstractStringBuilder.java | Class | A mutable sequence of characters.
Implements a modifiable string. |
Appendable.java | Interface | An object to which char sequences and values can be appended. |
ApplicationShutdownHooks.java | Class | |
ArithmeticException.java | Class | Thrown when an exceptional arithmetic condition has occurred. |
ArrayIndexOutOfBoundsException.java | Class | Thrown to indicate that an array has been accessed with an
illegal index. |
ArrayStoreException.java | Class | Thrown to indicate that an attempt has been made to store the
wrong type of object into an array of objects. |
AssertionError.java | Class | Thrown to indicate that an assertion has failed. |
AssertionStatusDirectives.java | Class | A collection of assertion status directives (such as "enable assertions
in package p" or "disable assertions in class c"). |
Boolean.java | Class | The Boolean class wraps a value of the primitive type
boolean in an object. |
Byte.java | Class | The
Byte class wraps a value of primitive type
byte in an object. |
Character.java | Class | The Character class wraps a value of the primitive
type char in an object. |
CharacterData.java | Class | |
CharSequence.java | Interface | A CharSequence is a readable sequence of char values. |
Class.java | Class | Instances of the class
Class represent classes and
interfaces in a running Java application. |
ClassCastException.java | Class | Thrown to indicate that the code has attempted to cast an object
to a subclass of which it is not an instance. |
ClassCircularityError.java | Class | Thrown when the Java Virtual Machine detects a circularity in the
superclass hierarchy of a class being loaded. |
ClassFormatError.java | Class | 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.java | Class | A class loader is an object that is responsible for loading classes. |
ClassNotFoundException.java | Class | Thrown when an application tries to load in a class through its
string name using:
- The
forName method in class Class .
- The
findSystemClass method in class
ClassLoader .
- The
loadClass method in class ClassLoader .
but no definition for the class with the specified name could be found. |
Cloneable.java | Interface | A class implements the Cloneable interface to
indicate to the
java.lang.Object.clone method that it
is legal for that method to make a
field-for-field copy of instances of that class. |
CloneNotSupportedException.java | Class | 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.java | Interface | This interface imposes a total ordering on the objects of each class that
implements it. |
Compiler.java | Class | The
Compiler class is provided to support Java-to-native-code
compilers and related services. |
ConditionalSpecialCasing.java | Class | This is a utility class for String.toLowerCase() and
String.toUpperCase() , that handles special casing with
conditions. |
Deprecated.java | Annotation | A program element annotated @Deprecated is one that programmers
are discouraged from using, typically because it is dangerous,
or because a better alternative exists. |
Double.java | Class | The
Double class wraps a value of the primitive type
double in an object. |
Enum.java | Class | This is the common base class of all Java language enumeration types. |
EnumConstantNotPresentException.java | Class | Thrown when an application tries to access an enum constant by name
and the enum type contains no constant with the specified name. |
Error.java | Class | An Error is a subclass of Throwable
that indicates serious problems that a reasonable application
should not try to catch. |
Exception.java | Class | The class Exception and its subclasses are a form of
Throwable that indicates conditions that a reasonable
application might want to catch. |
ExceptionInInitializerError.java | Class | Signals that an unexpected exception has occurred in a static initializer. |
Float.java | Class | The
Float class wraps a value of primitive type
float in an object. |
IllegalAccessError.java | Class | Thrown if an application attempts to access or modify a field, or
to call a method that it does not have access to. |
IllegalAccessException.java | Class | An IllegalAccessException is thrown when an application tries
to reflectively create an instance (other than an array),
set or get a field, or invoke a method, but the currently
executing method does not have access to the definition of
the specified class, field, method or constructor. |
IllegalArgumentException.java | Class | Thrown to indicate that a method has been passed an illegal or
inappropriate argument. |
IllegalMonitorStateException.java | Class | 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.java | Class | Signals that a method has been invoked at an illegal or
inappropriate time. |
IllegalThreadStateException.java | Class | Thrown to indicate that a thread is not in an appropriate state
for the requested operation. |
IncompatibleClassChangeError.java | Class | Thrown when an incompatible class change has occurred to some class
definition. |
IndexOutOfBoundsException.java | Class | 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. |
InheritableThreadLocal.java | Class | This class extends ThreadLocal to provide inheritance of values
from parent thread to child thread: when a child thread is created, the
child receives initial values for all inheritable thread-local variables
for which the parent has values. |
InstantiationError.java | Class | Thrown when an application tries to use the Java new
construct to instantiate an abstract class or an interface. |
InstantiationException.java | Class | 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. |
Integer.java | Class | The
Integer class wraps a value of the primitive type
int in an object. |
InternalError.java | Class | Thrown to indicate some unexpected internal error has occurred in
the Java Virtual Machine. |
InterruptedException.java | Class | Thrown when a thread is waiting, sleeping, or otherwise occupied,
and the thread is interrupted, either before or during the activity.
Occasionally a method may wish to test whether the current
thread has been interrupted, and if so, to immediately throw
this exception. |
Iterable.java | Interface | Implementing this interface allows an object to be the target of
the "foreach" statement. |
LinkageError.java | Class | 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.java | Class | The
Long class wraps a value of the primitive type
long in an object. |
Math.java | Class | The class
Math contains methods for performing basic
numeric operations such as the elementary exponential, logarithm,
square root, and trigonometric functions.
Unlike some of the numeric methods of class
StrictMath , all implementations of the equivalent
functions of class
Math are not defined to return the
bit-for-bit same results. |
NegativeArraySizeException.java | Class | Thrown if an application tries to create an array with negative size. |
NoClassDefFoundError.java | Class | Thrown if the Java Virtual Machine or a ClassLoader instance
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. |
NoSuchFieldError.java | Class | Thrown if an application tries to access or modify a specified
field of an object, and that object no longer has that field. |
NoSuchFieldException.java | Class | Signals that the class doesn't have a field of a specified name. |
NoSuchMethodError.java | Class | Thrown if an application tries to call a specified method of a
class (either static or instance), and that class no longer has a
definition of that method. |
NoSuchMethodException.java | Class | Thrown when a particular method cannot be found. |
NullPointerException.java | Class | Thrown when an application attempts to use null in a
case where an object is required. |
Number.java | Class | The abstract class Number is the superclass of classes
BigDecimal , BigInteger ,
Byte , Double , Float ,
Integer , Long , and Short . |
NumberFormatException.java | Class | 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.java | Class | Class Object is the root of the class hierarchy. |
OutOfMemoryError.java | Class | 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. |
Override.java | Annotation | Indicates that a method declaration is intended to override a
method declaration in a supertype. |
package-info.java | | |
Package.java | Class | Package objects contain version information
about the implementation and specification of a Java package.
This versioning information is retrieved and made available
by the
ClassLoader instance that
loaded the class(es). |
Process.java | Class | The
ProcessBuilder.start and
Runtime.exec(String[]String[]File) 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. |
ProcessBuilder.java | Class | This class is used to create operating system processes.
Each ProcessBuilder instance manages a collection
of process attributes. |
Readable.java | Interface | A Readable is a source of characters. |
Runnable.java | Interface | The Runnable interface should be implemented by any
class whose instances are intended to be executed by a thread. |
Runtime.java | Class | 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.java | Class | RuntimeException is the superclass of those
exceptions that can be thrown during the normal operation of the
Java Virtual Machine. |
RuntimePermission.java | Class | This class is for runtime permissions. |
SecurityException.java | Class | Thrown by the security manager to indicate a security violation. |
SecurityManager.java | Class | The security manager is a class that allows
applications to implement a security policy. |
Short.java | Class | The
Short class wraps a value of primitive type
short in an object. |
Shutdown.java | Class | Package-private utility class containing data structures and logic
governing the virtual-machine shutdown sequence. |
StackOverflowError.java | Class | Thrown when a stack overflow occurs because an application
recurses too deeply. |
StackTraceElement.java | Class | An element in a stack trace, as returned by
Throwable.getStackTrace . |
StrictMath.java | Class | The class
StrictMath contains methods for performing basic
numeric operations such as the elementary exponential, logarithm,
square root, and trigonometric functions. |
String.java | Class | The String class represents character strings. |
StringBuffer.java | Class | A thread-safe, mutable sequence of characters. |
StringBuilder.java | Class | A mutable sequence of characters. |
StringCoding.java | Class | Utility class for string encoding and decoding. |
StringIndexOutOfBoundsException.java | Class | Thrown by String methods to indicate that an index
is either negative or greater than the size of the string. |
SuppressWarnings.java | Annotation | Indicates that the named compiler warnings should be suppressed in the
annotated element (and in all program elements contained in the annotated
element). |
System.java | Class | The System class contains several useful class fields
and methods. |
Thread.java | Class | A thread is a thread of execution in a program. |
ThreadDeath.java | Class | An instance of
ThreadDeath is thrown in the victim thread
when the (deprecated)
Thread.stop method is invoked.
An application should catch instances of this class only if it
must clean up after being terminated asynchronously. |
ThreadGroup.java | Class | A thread group represents a set of threads. |
ThreadLocal.java | Class | This class provides thread-local variables. |
Throwable.java | Class | The Throwable class is the superclass of all errors and
exceptions in the Java language. |
TypeNotPresentException.java | Class | Thrown when an application tries to access a type using a string
representing the type's name, but no definition for the type with
the specified name can be found. |
UnknownError.java | Class | Thrown when an unknown but serious exception has occurred in the
Java Virtual Machine. |
UnsatisfiedLinkError.java | Class | Thrown if the Java Virtual Machine cannot find an appropriate
native-language definition of a method declared native . |
UnsupportedClassVersionError.java | Class | Thrown when the Java Virtual Machine attempts to read a class
file and determines that the major and minor version numbers
in the file are not supported. |
UnsupportedOperationException.java | Class | Thrown to indicate that the requested operation is not supported.
This class is a member of the
Java Collections Framework. |
VerifyError.java | Class | Thrown when the "verifier" detects that a class file,
though well formed, contains some sort of internal inconsistency
or security problem. |
VirtualMachineError.java | Class | Thrown to indicate that the Java Virtual Machine is broken or has
run out of resources necessary for it to continue operating. |
Void.java | Class | The
Void class is an uninstantiable placeholder class to hold a
reference to the
Class object representing the Java keyword
void. |