Question

Create a single line in Java that will output the reversed string to the console.

Answer 1

Code to demonstrate above Problem:

import java.util.Scanner;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class StringTester {

        public static void main(String[] args) {

                System.out.println("Enter String: ");
                Scanner sc=new Scanner(System.in);
                String s=sc.nextLine();
                
                //1st way
                /*
                 * new StringBuffer(s)=>converts String to StringBuffer Object
                 * .reverse()=> reverse the contents of StringBuffer
                 * .toString()=>converts StringBuffer to String
                 */
                System.out.println(new StringBuffer(s).reverse().toString());
                
                //2nd way
                /*
                 * Using Streams(Java 8)
                 */
                System.out.println(Stream.of(s).map(word->new StringBuilder(word).reverse()).collect(Collectors.joining(" ")));
                sc.close();
        }

}

Sample Run Results:

Enter String: 
reverse string in single line
enil elgnis ni gnirts esrever
enil elgnis ni gnirts esrever

Important Image Of Code: