Java String Encode by Charset encodeOneChar(CharsetEncoder encoder, int uchar)

Description

Encode a single character in UTF-16.

License

Open Source License

Parameter

Parameter	Description
encoder	the encoder to use for the encoding
uchar	the Unicode character to encode

Return

the encoded character

Declaration

public static int encodeOneChar(CharsetEncoder encoder, int uchar) 

Method Source Code

//package com.java2s;
/*//w w w . j av a 2  s .co  m
 * Copyright 2010 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.nio.ByteBuffer;
import java.nio.CharBuffer;

import java.nio.charset.CharsetEncoder;
import java.nio.charset.CoderResult;

public class Main {
    /**
     * Encode a single character in UTF-16.
     * @param encoder the encoder to use for the encoding
     * @param uchar the Unicode character to encode
     * @return the encoded character
     */
    public static int encodeOneChar(CharsetEncoder encoder, int uchar) {
        ByteBuffer bb = ByteBuffer.allocate(10);
        CharBuffer cb = CharBuffer.wrap(new char[] { (char) uchar });
        CoderResult result = encoder.encode(cb, bb, true);
        if (result.isError()) {
            return 0;
        }
        if (bb.position() > 4) {
            return 0;
        }
        int encChar = 0;
        for (int position = 0; position < bb.position(); position++) {
            encChar <<= 8;
            encChar |= (bb.get(position) & 0xff);
        }
        return encChar;
    }
}

Related

1. encode(String text, Charset charset)
2. encode(String value, Charset charset)
3. encodeBase64(String s, Charset cs)
4. encodeCHARSET(String string, Charset charset)
5. encodeFormFields(final String content, final Charset charset)
6. encoding(final String content, final Charset charset, final boolean blankAsPlus)
7. ensureEncodingSet(List options, Charset defaultEncoding)
8. getEncoder(Charset charset)
9. getEncoder(Charset charset)