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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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