src/java.base/share/classes/java/nio/charset/StandardCharsets.java - master - githubmirror/riscv-port

src/java.base/share/classes/java/nio/charset/StandardCharsets.java
96 строк3 KB
Naoto Sato
8310047: Add UTF-32 based Charsets into StandardCharsets
11 июл 2023, 19:10
11 июл 2023, 19:1000c7f91
/*
 * Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package java.nio.charset;

/**
 * Constant definitions for the standard {@link Charset charsets}. These
 * charsets are guaranteed to be available on every implementation of the Java
 * platform.
 *
 * @see <a href="Charset.html#standard">Standard Charsets</a>
 * @since 1.7
 */
public final class StandardCharsets {

    // To avoid accidental eager initialization of often unused Charsets
    // from happening while the VM is booting up, which may delay
    // initialization of VM components, we should generally avoid depending
    // on this class from elsewhere in java.base.

    private StandardCharsets() {
        throw new AssertionError("No java.nio.charset.StandardCharsets instances for you!");
    }

    /**
     * Seven-bit ASCII, also known as ISO646-US, also known as the
     * Basic Latin block of the Unicode character set.
     */
    public static final Charset US_ASCII = sun.nio.cs.US_ASCII.INSTANCE;

    /**
     * ISO Latin Alphabet {@literal No. 1}, also known as ISO-LATIN-1.
     */
    public static final Charset ISO_8859_1 = sun.nio.cs.ISO_8859_1.INSTANCE;

    /**
     * Eight-bit UCS Transformation Format.
     */
    public static final Charset UTF_8 = sun.nio.cs.UTF_8.INSTANCE;

    /**
     * Sixteen-bit UCS Transformation Format, big-endian byte order.
     */
    public static final Charset UTF_16BE = new sun.nio.cs.UTF_16BE();

    /**
     * Sixteen-bit UCS Transformation Format, little-endian byte order.
     */
    public static final Charset UTF_16LE = new sun.nio.cs.UTF_16LE();

    /**
     * Sixteen-bit UCS Transformation Format, byte order identified by an
     * optional byte-order mark.
     */
    public static final Charset UTF_16 = new sun.nio.cs.UTF_16();

    /**
     * Thirty-two-bit UCS Transformation Format, big-endian byte order.
     * @since 22
     */
    public static final Charset UTF_32BE = new sun.nio.cs.UTF_32BE();

    /**
     * Thirty-two-bit UCS Transformation Format, little-endian byte order.
     * @since 22
     */
    public static final Charset UTF_32LE = new sun.nio.cs.UTF_32LE();

    /**
     * Thirty-two-bit UCS Transformation Format, byte order identified by an
     * optional byte-order mark.
     * @since 22
     */
    public static final Charset UTF_32 = new sun.nio.cs.UTF_32();
}