Java ByteBuffer from String asByteBuffer(String s)

Description

as Byte Buffer

License

Open Source License

Declaration

public static ByteBuffer asByteBuffer(String s) 

Method Source Code

//package com.java2s;
/**//from w w w  .j a  v  a  2s.  c om
 * Copyright 2007-2016, Kaazing Corporation. 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.charset.Charset;

public class Main {
    public static final Charset UTF_8 = Charset.forName("UTF-8");
    public static final Charset US_ASCII = Charset.forName("US-ASCII");

    public static ByteBuffer asByteBuffer(String s) {
        if (null == s) {
            return null;
        }
        if (s.length() < 1024) { // we will only check isASCII if message less then 1K.
            return isASCII(s) ? US_ASCII.encode(s) : UTF_8.encode(s);
        } else {
            return UTF_8.encode(s);
        }
    }

    public static ByteBuffer asByteBuffer(byte[] bytes) {
        return (bytes != null) ? ByteBuffer.wrap(bytes) : null;
    }

    public static boolean isASCII(String s) {
        int size = s.length();
        char c;
        for (int i = 0; i < size; i++) {
            c = s.charAt(i);
            if (!(c >= 0 && c <= 127)) {
                return false;
            }
        }
        return true;
    }
}

Related

1. asByteBuffer(String data)
2. stringToByteBuffer(String data)
3. stringToByteBuffer(String string)
4. stringToNullTerminatedByteBuffer(String s)
5. toByteBuffer(final String s)