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Package java.lang

Classes , Interfaces , Exceptions , Errors

This package contains essential Java classes, including numerics, strings, objects, compiler, runtime, security, and threads. This is the only package that is automatically imported into every Java program.


Classes

Class Boolean
Class Character
Class Class
Class ClassLoader
Class Compiler
Class Double
Class Float
Class Integer
Class Long
Class Math
Class Number
Class Object
Class Process
Class Runtime
Class SecurityManager
Class String
Class StringBuffer
Class System
Class Thread
Class ThreadGroup
Class Throwable


Interfaces

Interface Cloneable
Interface Runnable


Exceptions

Class ArithmeticException
Class ArrayIndexOutOfBoundsException
Class ArrayStoreException
Class ClassCastException
Class ClassNotFoundException
Class CloneNotSupportedException
Class Exception
Class IllegalAccessException
Class IllegalArgumentException
Class IllegalMonitorStateException
Class IllegalThreadStateException
Class IndexOutOfBoundsException
Class InstantiationException
Class InterruptedException
Class NegativeArraySizeException
Class NoSuchMethodException
Class NullPointerException
Class NumberFormatException
Class RuntimeException
Class SecurityException
Class StringIndexOutOfBoundsException


Errors

Class AbstractMethodError
Class ClassCircularityError
Class ClassFormatError
Class Error
Class IllegalAccessError
Class IncompatibleClassChangeError
Class InstantiationError
Class InternalError
Class LinkageError
Class NoClassDefFoundError
Class NoSuchFieldError
Class NoSuchMethodError
Class OutOfMemoryError
Class StackOverflowError
Class ThreadDeath
Class UnknownError
Class UnsatisfiedLinkError
Class VerifyError
Class VirtualMachineError


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