java.lang
package contains these:
- Cloneable
- Runnable
- Boolean
- Byte
- Character
- Class
- ClassLoader
- Compiler
- Double
- Float
- Integer
- Long
- Math
- Number
- Object
- Process
- Runtime
- SecurityManager
- Short
- String
- StringBuffer
- System
- Thread
- ThreadGroup
- Throwable
- Void
- ArithmeticException
- ArrayIndexOutOfBoundsException
- ArrayStoreException
- ClassCastException
- ClassNotFoundException
- CloneNotSupportedException
- Exception
- IllegalAccessException
- IllegalArgumentException
- IllegalMonitorStateException
- IllegalStateException
- IllegalThreadStateException
- IndexOutOfBoundsException
- InstantiationException
- InterruptedException
- NegativeArraySizeException
- NoSuchFieldException
- NoSuchMethodException
- NullPointerException
- NumberFormatException
- RuntimeException
- SecurityException
- StringIndexOutOfBoundsException
- AbstractMethodError
- ClassCircularityError
- ClassFormatError
- Error
- ExceptionInInitializerError
- IllegalAccessError
- IncompatibleClassChangeError
- InstantiationError
- InternalError
- LinkageError
- NoClassDefFoundError
- NoSuchFieldError
- NoSuchMethodError
- OutOfMemoryError
- StackOverflowError
- ThreadDeath
- UnknownError
- UnsatisfiedLinkError
- VerifyError
- VirtualMachineError