StandardCharsetsクラスは定数を定義しただけのクラスである。コンストラクタはprivateな上にAssertionErrorをスローする実装となっており,インスタンスを作成しようものなら,プログラムが終了してしまう。
このクラスで定義されているのは,次の文字セットである。
- ASCII
- ISO-8859-1
- UTF-8
- UTF-16
- UTF-16(ビッグエンディアン)
- UTF-16(リトルエンディアン)
/*
* Copyright (c) 2011, 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;
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!");
}
public static final Charset US_ASCII = sun.nio.cs.US_ASCII.INSTANCE;
public static final Charset ISO_8859_1 = sun.nio.cs.ISO_8859_1.INSTANCE;
public static final Charset UTF_8 = sun.nio.cs.UTF_8.INSTANCE;
public static final Charset UTF_16BE = new sun.nio.cs.UTF_16BE();
public static final Charset UTF_16LE = new sun.nio.cs.UTF_16LE();
public static final Charset UTF_16 = new sun.nio.cs.UTF_16();
}
* Copyright (c) 2011, 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;
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!");
}
public static final Charset US_ASCII = sun.nio.cs.US_ASCII.INSTANCE;
public static final Charset ISO_8859_1 = sun.nio.cs.ISO_8859_1.INSTANCE;
public static final Charset UTF_8 = sun.nio.cs.UTF_8.INSTANCE;
public static final Charset UTF_16BE = new sun.nio.cs.UTF_16BE();
public static final Charset UTF_16LE = new sun.nio.cs.UTF_16LE();
public static final Charset UTF_16 = new sun.nio.cs.UTF_16();
}