Java program to reverse a string using recursion

StringReversal.java

public class StringReversal {

	static String reverse = "";

	public static String reverse(String str) {

		if (str.length() == 1) {
			return str;
		} else {
			reverse += str.charAt(str.length() - 1)
					+ reverse(str.substring(0, str.length() - 1));
			return reverse;
		}
	}

	public static void main(String[] args) {
		
		System.out.println(reverse("Hello World!"));
		
	}
}