Creates a ISO-8859-1 version of an UTF-8 encoded string. - Java java.lang

Java examples for java.lang:String UTF

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Description

Creates a ISO-8859-1 version of an UTF-8 encoded string.

Demo Code

//package com.java2s;

public class Main {
    public static void main(String[] argv) {
        String utf8String = "java2s.com";
        System.out.println(encodeUTF8String(utf8String));
    }//from  ww  w  .  j  av a 2 s . c o m

    /**
     * Creates a ISO-8859-1 version of an UTF-8 encoded string.
     * 
     * @param utf8String
     * 
     * @return
     */
    public static String encodeUTF8String(String utf8String) {
        if (utf8String == null) {
            return null;
        }
        if (utf8String.length() == 0) {
            return "";
        }

        byte[] utf8ByteArray = utf8StringToByteArray(utf8String);

        return byteArrayToString(utf8ByteArray);
    }

    /** Creates a byte array for an UTF-8 encoded string. */
    public static byte[] utf8StringToByteArray(String dataString) {
        if (dataString == null) {
            return null;
        }

        try {
            return dataString.getBytes("utf-8");
        } catch (Exception ex) {
        }
        return null;
    }

    /** Converts a byte array to a string */
    public static String byteArrayToString(byte[] data) {
        if (data == null) {
            return null;
        }

        char[] result = new char[data.length];
        for (int i = 0; i < data.length; i++) {
            result[i] = (char) (data[i] & 0xFF);
        }

        return new String(result);
    }

    /** Converts a byte array to a string */
    public static String byteArrayToString(byte[] data, int offset,
            int length) {
        if (data == null || data.length < offset + length) {
            return null;
        }

        char[] result = new char[length];
        for (int i = 0; i < length; i++) {
            result[i] = (char) (data[offset + i] & 0xFF);
        }

        return new String(result);
    }
}

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