You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.3 KiB
72 lines
2.3 KiB
/*
|
|
* Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved.
|
|
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* Provides classes that are fundamental to the design of the Java
|
|
* programming language. The most important classes are {@code
|
|
* Object}, which is the root of the class hierarchy, and {@code
|
|
* Class}, instances of which represent classes at run time.
|
|
*
|
|
* <p>Frequently it is necessary to represent a value of primitive
|
|
* type as if it were an object. The wrapper classes {@code Boolean},
|
|
* {@code Character}, {@code Integer}, {@code Long}, {@code Float},
|
|
* and {@code Double} serve this purpose. An object of type {@code
|
|
* Double}, for example, contains a field whose type is double,
|
|
* representing that value in such a way that a reference to it can be
|
|
* stored in a variable of reference type. These classes also provide
|
|
* a number of methods for converting among primitive values, as well
|
|
* as supporting such standard methods as equals and hashCode. The
|
|
* {@code Void} class is a non-instantiable class that holds a
|
|
* reference to a {@code Class} object representing the type void.
|
|
*
|
|
* <p>The class {@code Math} provides commonly used mathematical
|
|
* functions such as sine, cosine, and square root. The classes {@code
|
|
* String}, {@code StringBuffer}, and {@code StringBuilder} similarly
|
|
* provide commonly used operations on character strings.
|
|
*
|
|
* <p>Classes {@code ClassLoader}, {@code Process}, {@code
|
|
* ProcessBuilder}, {@code Runtime}, {@code SecurityManager}, and
|
|
* {@code System} provide "system operations" that manage the dynamic
|
|
* loading of classes, creation of external processes, host
|
|
* environment inquiries such as the time of day, and enforcement of
|
|
* security policies.
|
|
*
|
|
* <p>Class {@code Throwable} encompasses objects that may be thrown
|
|
* by the {@code throw} statement. Subclasses of {@code Throwable}
|
|
* represent errors and exceptions.
|
|
*
|
|
* <a name="charenc"></a>
|
|
* <h3>Character Encodings</h3>
|
|
*
|
|
* The specification of the {@link java.nio.charset.Charset
|
|
* java.nio.charset.Charset} class describes the naming conventions
|
|
* for character encodings as well as the set of standard encodings
|
|
* that must be supported by every implementation of the Java
|
|
* platform.
|
|
*
|
|
* @since JDK1.0
|
|
*/
|
|
package java.lang;
|