CareerCup 1.2

StringReverse.java

//CareerCup 1.2 Reverse a string by StringBuilder. 
class StringReverse {

	public static void main(String args[]) {
		System.out.println("before:  " + args[0]);
		
		String s = new StringBuilder(args[0]).reverse().toString();
		System.out.println("after:  " + s);
	}
}