Java Byte Array to String by Charset convertToBytes(final String str, final Charset charset)

Description

convert To Bytes

License

Open Source License

Declaration

public static byte[] convertToBytes(final String str, final Charset charset) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;

public class Main {
    public static byte[] convertToBytes(final String str, final Charset charset) {
        return str.getBytes(charset);
    }/* w w  w  . ja  v  a2s .c  o  m*/

    public static byte[] convertToBytes(final String str, final String charsetName) {
        return convertToBytes(str, Charset.forName(charsetName));
    }

    public static byte[] convertToBytes(final String str) {
        return convertToBytes(str, Charset.defaultCharset());
    }

    public static byte[] convertToBytes(final char[] chars, final Charset charset) {
        CharBuffer cb = CharBuffer.allocate(chars.length);
        cb.put(chars);
        cb.flip();
        ByteBuffer bb = charset.encode(cb);
        return bb.array();
    }

    public static byte[] convertToBytes(final char[] chars, final String charsetName) {
        return convertToBytes(chars, Charset.forName(charsetName));
    }

    public static byte[] convertToBytes(final char[] chars) {
        return convertToBytes(chars, Charset.defaultCharset());
    }

    public static byte[] convertToBytes(final short s) {
        byte[] bytes = new byte[2];
        bytes[0] = (byte) (s & 0xff);
        bytes[1] = (byte) ((s & 0xff00) >> 8);
        return bytes;
    }

    public static byte[] convertToBytes(final char c) {
        byte[] bytes = new byte[2];
        bytes[0] = (byte) (c);
        bytes[1] = (byte) (c >> 8);
        return bytes;
    }

    public static byte[] convertToBytes(final int i) {
        byte[] bytes = new byte[4];
        bytes[0] = (byte) (i & 0xff);
        bytes[1] = (byte) ((i & 0xff00) >> 8);
        bytes[2] = (byte) ((i & 0xff0000) >> 16);
        bytes[3] = (byte) ((i & 0xff000000) >> 24);
        return bytes;
    }

    public static byte[] convertToBytes(final long l) {
        byte[] bytes = new byte[8];
        bytes[0] = (byte) (l & 0xff);
        bytes[1] = (byte) ((l >> 8) & 0xff);
        bytes[2] = (byte) ((l >> 16) & 0xff);
        bytes[3] = (byte) ((l >> 24) & 0xff);
        bytes[4] = (byte) ((l >> 32) & 0xff);
        bytes[5] = (byte) ((l >> 40) & 0xff);
        bytes[6] = (byte) ((l >> 48) & 0xff);
        bytes[7] = (byte) ((l >> 56) & 0xff);
        return bytes;
    }

    public static byte[] convertToBytes(final float f) {
        int intBits = Float.floatToIntBits(f);
        return convertToBytes(intBits);
    }

    public static byte[] convertToBytes(final double d) {
        long intBits = Double.doubleToLongBits(d);
        return convertToBytes(intBits);
    }
}

Related

1. byteToString(Charset charset, byte[] data)
2. changeEncoding(byte[] byteArray, Charset charsetFrom, Charset charsetTo)
3. charSequence2Bytes(CharSequence sb, Charset charset)
4. charSetForBOM(byte[] buffer, int offset)
5. convertCharset(byte[] content, Charset fromCharset, Charset toCharset)
6. convertToChars(final byte[] bytes, final Charset charset)
7. convertToString(byte[] bytes, Charset charset)
8. convertToString(final byte[] bytes, final Charset charset)
9. decode(CharsetDecoder decoder, byte[] in)