Question

I need to reverse strings with spaces using the nextLine() with Scanner in the following code:

package Chapter8;

//To import the necessary libraries

import java.util.Scanner;

public class BackwardString

{

public static void main(String[] args)

{

//To read string from user input

String input;

Scanner scanner = new Scanner(System.in);

System.out.print("Enter String here : ");

input=scanner.next();

//To reverse passed string

backward(input);

//To close Scanner object

scanner.close();

}

//To reverse the input string

private static void backward(String source)

{

int i, len = source.length();

StringBuilder dest = new StringBuilder(len);

for (i = (len - 1); i >= 0; i--)

{

dest.append(source.charAt(i));

}

System.out.println("Reversed String : "+dest);

}

}

Thank you!

Answer 1

If you have any doubts, please give me comment...

package Chapter8;

//To import the necessary libraries

import java.util.Scanner;

public class BackwardString {

    public static void main(String[] args) {

        // To read string from user input

        String input;

        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter String here : ");

        input = scanner.nextLine();

        // To reverse passed string

        backward(input);

        // To close Scanner object

        scanner.close();

    }

    // To reverse the input string

    private static void backward(String source) {

        int i, len = source.length();

        StringBuilder dest = new StringBuilder(len);

        for (i = (len - 1); i >= 0; i--) {

            dest.append(source.charAt(i));

        }

        System.out.println("Reversed String : " + dest);

    }

}