java - Fast conversion of String to byte[] using UTF-16LE encoding -

i need bytes of millions of string using :

string str="blablabla...."; // utf-16le encoding string extracted db bytes=str.getbytes("utf-16le") 

but awfully slow. there custom fast versions of getbytes don't support utf-16le. example 1 of them:

// http://stackoverflow.com/questions/12239993/why-is-the-native-string-getbytes-method-slower-than-the-custom-implemented-getb private static byte[] getbytesfast(string str) {     final char buffer[] = new char[str.length()];     final int length = str.length();     str.getchars(0, length, buffer, 0);     final byte b[] = new byte[length];     (int j = 0; j < length; j++)         b[j] = (byte) buffer[j];     return b; } 

is there similar fast solution convert java string byte array using utf-16le encoding?

this version produce utf16le bytes array:

private static byte[] getbytesutf16le(string str) {     final int length = str.length();     final char buffer[] = new char[length];     str.getchars(0, length, buffer, 0);     final byte b[] = new byte[length*2];     (int j = 0; j < length; j++) {         b[j*2] = (byte) (buffer[j] & 0xff);         b[j*2+1] = (byte) (buffer[j] >> 8);     }     return b; } 

tested:

string test = "utf16 Ελληνικά Русский 日本語"; byte[] bytes = test.getbytes("utf-16le"); byte[] bytes2 = getbytesutf16le(test); system.out.println(arrays.equals(bytes, bytes2));