Java String to Unicode convertStringToUnicodeString(String s)

Description

Converts a regular java string to its unicode string representation

License

Open Source License

Parameter

Parameter	Description
s	Java String to convert to unicode

Return

the converted string

Declaration

public static String convertStringToUnicodeString(String s) throws Exception 

Method Source Code

//package com.java2s;
// The MIT License

public class Main {
    /**//from  w w w  .  jav a2 s.c  o  m
     * Converts a regular java string to its unicode string representation<br><br>
     *
     * @param s     Java String to convert to unicode
     * @return the converted string
     */
    public static String convertStringToUnicodeString(String s) throws Exception {
        StringBuffer convert = new StringBuffer();
        for (int i = 0; i < s.length(); i++) {
            char ch = s.charAt(i);

            if ((byte) ch >= 0 && (int) ch <= 255)
                convert.append(ch);
            else {
                if ((int) ch > 255 || (int) ch < 0)
                    throw new Exception("Invalid Character: " + ch);
                String val = "\\u";
                int intVal = (int) ch;
                int bit4 = (int) (intVal / Math.pow(16, 3));
                intVal -= bit4 * Math.pow(16, 3);
                int bit3 = (int) (intVal / Math.pow(16, 2));
                intVal -= bit3 * Math.pow(16, 2);
                int bit2 = (int) (intVal / Math.pow(16, 1));
                intVal -= bit2 * Math.pow(16, 1);
                int bit1 = (int) (intVal / Math.pow(16, 0));
                intVal -= bit1 * Math.pow(16, 0);
                if (intVal != 0)
                    System.err.println("Oops, no character to conver to...");
                convert.append(val + Character.toUpperCase(Integer.toHexString(bit4).charAt(0))
                        + Character.toUpperCase(Integer.toHexString(bit3).charAt(0))
                        + Character.toUpperCase(Integer.toHexString(bit2).charAt(0))
                        + Character.toUpperCase(Integer.toHexString(bit1).charAt(0)));
            } // else
        } // for
        return convert.toString();
    }
}