Membalikkan karakter pada sebuah string

reservestring.java

/*
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package reversestring;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 *
 * @author YusufSyaifudin
 */
public class Reversestring {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
        try {
            String str = input.readLine();
            System.out.println("String asli : " + str);

            //
            str = new StringBuffer(str).reverse().toString();

            System.out.println("String yang dibalik : " + str);
        } catch (IOException ex) {
            System.out.print(ex);
        }
    }
}