unicode编码 转汉字 java

//unicode转汉字
private String decodeUnicode(final String dataStr ) {
int start = 0;
int end = 0;
final StringBuffer buffer = new StringBuffer();
while( start > -1 ) {
end = dataStr.indexOf( "\\u", start + 2 );
String charStr = "";
if( end == -1 ) {
charStr = dataStr.substring( start + 2, dataStr.length() );
} else {
charStr = dataStr.substring( start + 2, end);
}
char letter = (char) Integer.parseInt( charStr, 16 );
buffer.append( new Character( letter ).toString() );
start = end;
}
return buffer.toString();
}

decodeUnicode("\u5b64\u5357\u6ce8\u6c34\u7ad9")
孤南注水站