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Package java.lang

Added Classes and Interfaces
AssertionError Thrown to indicate that an assertion has failed.
CharSequence A CharSequence is a readable sequence of characters.
StackTraceElement An element in a stack trace as returned by Throwable#getStackTrace() Each element represents a single stack frame.
 

Changed Classes and Interfaces
AbstractMethodError Thrown when an application tries to call an abstract method.
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.
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.
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 in the Unicode specification.
Class Instances of the class Class represent classes and interfaces in a running Java application.
ClassCastException Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance.
ClassCircularityError Thrown when a circularity has been detected while initializing a class.
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 A class loader is an object that is responsible for loading classes.
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.
Cloneable 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.
Comparable This interface imposes a total ordering on the objects of each class that implements it.
Compiler The Compiler class is provided to support Java-to-native-code compilers and related services.
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.
ExceptionInInitializerError Signals that an unexpected exception has occurred in a static initializer.
Float The Float class wraps a value of primitive type float in an object.
IllegalAccessError Thrown if an application attempts to access or modify a field or to call a method that it does not have access to.
IllegalAccessException 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 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 Signals that a method has been invoked at an illegal or inappropriate time.
IllegalThreadStateException Thrown to indicate that a thread is not in an appropriate state for the requested operation.
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.
InheritableThreadLocal 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 Thrown when an application tries to use the Java new construct to instantiate an abstract class or an interface.
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.
InternalError Thrown to indicate some unexpected internal error has occurred in the Java Virtual Machine.
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.
Math The class Math contains methods for performing basic numeric operations such as the elementary exponential logarithm square root and trigonometric functions.
NegativeArraySizeException Thrown if an application tries to create an array with negative size.
NoClassDefFoundError 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 Thrown if an application tries to access or modify a specified field of an object and that object no longer has that field.
NoSuchFieldException Signals that the class doesn't have a field of a specified name.
NoSuchMethodError 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 Thrown when a particular method cannot be found.
NullPointerException Thrown when an application attempts to use null in a case where an object is required.
Number The abstract class Number is the superclass of classes BigDecimal BigInteger 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.
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.
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.
RuntimePermission This class is for runtime permissions.
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 wraps a value of primitive type short in an object.
StackOverflowError Thrown when a stack overflow occurs because an application recurses too deeply.
StrictMath The class StrictMath contains methods for performing basic numeric operations such as the elementary exponential logarithm square root and trigonometric functions.
String The String class represents character strings.
StringBuffer A string buffer implements a mutable sequence of characters.
StringIndexOutOfBoundsException Thrown by String methods to indicate that an index is either negative or greater than the size of the string.
System The System class contains several useful class fields and methods.
Thread A thread is a thread of execution in a program.
ThreadDeath An instance of ThreadDeath is thrown in the victim thread when the stop method with zero arguments in class Thread is called.
ThreadGroup A thread group represents a set of threads.
ThreadLocal This class provides thread-local variables.
Throwable The Throwable class is the superclass of all errors and exceptions in the Java language.
UnknownError Thrown when an unknown but serious exception has occurred in the Java Virtual Machine.
UnsatisfiedLinkError Thrown if the Java Virtual Machine cannot find an appropriate native-language definition of a method declared native.
UnsupportedOperationException Thrown to indicate that the requested operation is not supported.
VerifyError 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.
Void The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the Java keyword void.