java.lang
Interfaces 
Cloneable
Runnable
Classes 
Boolean
Byte
Character
Class
ClassLoader
Double
Float
Integer
Long
Math
Number
Object
SecurityManager
Short
String
StringBuffer
System
Thread
ThreadGroup
Throwable
Void
Exceptions 
ArithmeticException
ArrayIndexOutOfBoundsException
ArrayStoreException
ClassCastException
ClassNotFoundException
CloneNotSupportedException
Exception
IllegalAccessException
IllegalArgumentException
IllegalMonitorStateException
IllegalStateException
IllegalThreadStateException
IndexOutOfBoundsException
InstantiationException
InterruptedException
NoSuchFieldException
NoSuchMethodException
NullPointerException
NumberFormatException
RuntimeException
SecurityException
StringIndexOutOfBoundsException
UnsupportedOperationException
Errors 
AbstractMethodError
AssertionError
ClassFormatError
Error
ExceptionInInitializerError
IncompatibleClassChangeError
InstantiationError
LinkageError
NoClassDefFoundError
NoSuchFieldError
NoSuchMethodError
OutOfMemoryError
StackOverflowError
UnsatisfiedLinkError
VirtualMachineError