Package java.lang
package java.lang
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ClassDescriptionException thrown when an attempt is made to call an abstract method.Declares methods to append characters or character sequences.Thrown when an exceptional arithmetic condition has occurred.Thrown to indicate that an array has been accessed with an illegal index.Thrown to indicate that an attempt has been made to store the wrong type of object into an array of objects.The Boolean class wraps a value of the primitive type boolean in an object.The Byte class is the standard wrapper for byte values.The Character class wraps a value of the primitive type char in an object.This interface represents an ordered set of characters and defines the methods to probe them.Class<T>Instances of the class Class represent classes and interfaces in a running Java application.Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance.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.Deprecated.clone isn't supported in Codename One, this interface is here strictly for compilation purposesThrown when a program attempts to clone an object which does not support the
Cloneableinterface.Comparable<T>This interface should be implemented by all classes that wish to define a natural order of their instances.An annotation for marking an element as deprecated.The Double class wraps a value of the primitive type double in an object.Implementation class required to compile enumsAn Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch.The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch.The Float class wraps a value of primitive type float in an object.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.Thrown to indicate that a method has been passed an illegal or inappropriate argument.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.Thrown to indicate that a thread is not in an appropriate state for the requested operation.IncompatibleClassChangeErroris the superclass of all classes which represent errors that occur when inconsistent class files are loaded into the same running image.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.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.The Integer class wraps a value of the primitive type int in an object.Thrown when a thread is waiting, sleeping, or otherwise paused for a long time and another thread interrupts it.Iterable<T>Objects of classes that implement this interface can be used within aforeachstatement.LinkageErroris the superclass of all error classes that occur when loading and linking class files.The Long class wraps a value of the primitive type long in an object.The class Math contains methods for performing basic numeric operations.Thrown if an application tries to create an array with negative size.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.Thrown when the virtual machine notices that a program tries to reference, on a class or object, a field that does not exist.Thrown when an application attempts to use null in a case where an object is required.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.Class Object is the root of the class hierarchy.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.An annotation to indicate that a method is intended to override a superclass method.Base class for Java record types.The Runnable interface should be implemented by any class whose instances are intended to be executed by a thread.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.RuntimeException is the superclass of those exceptions that can be thrown during the normal operation of the Java Virtual Machine.Thrown by the system to indicate a security violation.The Short class is the standard wrapper for short values.The String class represents character strings.A string buffer implements a mutable sequence of characters.A string builder implements a mutable sequence of characters.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.An annotation that indicates a compiler should suppress any warnings of the type specified in theSuppressWarnings.value().The System class contains several useful class fields and methods.A thread is a thread of execution in a program.ThreadLocal<T>The Throwable class is the superclass of all errors and exceptions in the Java language.Thrown to indicate that the Java Virtual Machine is broken or has run out of resources necessary for it to continue operating.