Reverse a String Java

 

public class StringReverseExample {
    public static void main(String args[]) {
        String word = "HelloWorld";
        String reverse = new StringBuffer(word).reverse().toString();
        System.out.println(reverse);

        word = "WakeUp";
        reverse = new StringBuilder(word).reverse().toString();
        System.out.println(reverse);

        word = "Band";
        reverse = reverse(word);
        System.out.println(reverse);
    }
    public static String reverse(String source) {
        if(source == null || source.isEmpty()) {
            return source;
        }
        String reverse = "";
        for(int i = source.length() -1; i>=0; i--) {
            reverse = reverse + source.charAt(i);
        }
        return reverse;
    }
}