Package java.lang

Interface Summary

Interface	Description
Appendable	Declares methods to append characters or character sequences.
AutoCloseable
CharSequence	This interface represents an ordered set of characters and defines the methods to probe them.
Cloneable	Deprecated clone isn't supported in Codename One, this interface is here strictly for compilation purposes
Comparable<T>	This interface should be implemented by all classes that wish to define a natural order of their instances.
Iterable<T>	Objects of classes that implement this interface can be used within a foreach statement.
Runnable	The Runnable interface should be implemented by any class whose instances are intended to be executed by a thread.

Class Summary

Class	Description
Boolean	The Boolean class wraps a value of the primitive type boolean in an object.
Byte	The Byte class is the standard wrapper for byte values.
Character	The Character class wraps a value of the primitive type char in an object.
Class<T>	Instances of the class Class represent classes and interfaces in a running Java application.
ClassLoader
Double	The Double class wraps a value of the primitive type double in an object.
Enum<E extends Enum<E>>	Implementation class required to compile enums
Float	The Float class wraps a value of primitive type float in an object.
Integer	The Integer class wraps a value of the primitive type int in an object.
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.
Number
Object	Class Object is the root of the class hierarchy.
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.
Short	The Short class is the standard wrapper for short values.
StackTraceElement
String	The String class represents character strings.
StringBuffer	A string buffer implements a mutable sequence of characters.
StringBuilder	A string builder implements a mutable sequence of characters.
System	The System class contains several useful class fields and methods.
Thread	A thread is a thread of execution in a program.
ThreadLocal<T>
Throwable	The Throwable class is the superclass of all errors and exceptions in the Java language.
Void

Exception Summary

Exception	Description
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.
ClassCastException	Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance.
ClassNotFoundException	Thrown when an application tries to load in a class through its string name using the forName method in class Class but no definition for the class with the specified name could be found.
CloneNotSupportedException	Thrown when a program attempts to clone an object which does not support the Cloneable interface.
Exception	The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.
IllegalAccessException	Thrown when an application tries to load in a class, but the currently executing method does not have access to the definition of the specified class, because the class is not public and in another package.
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
IllegalThreadStateException	Thrown to indicate that a thread is not in an appropriate state for the requested operation.
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.
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.
InterruptedException	Thrown when a thread is waiting, sleeping, or otherwise paused for a long time and another thread interrupts it.
NegativeArraySizeException	Thrown if an application tries to create an array with negative size.
NullPointerException	Thrown when an application attempts to use null in a case where an object is required.
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.
RuntimeException	RuntimeException is the superclass of those exceptions that can be thrown during the normal operation of the Java Virtual Machine.
SecurityException	Thrown by the system to indicate a security violation.
StringIndexOutOfBoundsException	Thrown by the charAt method in class String and by other String methods to indicate that an index is either negative or greater than or equal to the size of the string.
UnsupportedOperationException

Error Summary

Error	Description
AbstractMethodError	Exception thrown when an attempt is made to call an abstract method.
AssertionError
Error	An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch.
IncompatibleClassChangeError	IncompatibleClassChangeError is the superclass of all classes which represent errors that occur when inconsistent class files are loaded into the same running image.
LinkageError	LinkageError is the superclass of all error classes that occur when loading and linking class files.
NoClassDefFoundError	Thrown if the Java Virtual Machine 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 when the virtual machine notices that a program tries to reference, on a class or object, a field that does not exist.
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.
VirtualMachineError	Thrown to indicate that the Java Virtual Machine is broken or has run out of resources necessary for it to continue operating.

Annotation Types Summary

Annotation Type	Description
Deprecated	An annotation for marking an element as deprecated.
Override	An annotation to indicate that a method is intended to override a superclass method.
SafeVarargs
SuppressWarnings	An annotation that indicates a compiler should suppress any warnings of the type specified in the SuppressWarnings.value().