need help quick. Output the input backwards.

Question

Heres my code;
package javaapplication126;

import java.util.Arrays;
import java.util.Scanner;
public class JavaApplication126 {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {

System.out.println("Please Enter a word");
Scanner Reply1= new Scanner(System.in); //this is object for input
String a=Reply1.next(); //this is renaming the input to a

String[] Nope = new String[a.length()]; // stating that length of array

System.out.println(Arrays.toString(Nope)); // converting input/array to String.

//my output is [null, null, null] when i insert the word 2.
// im trying to reverse the word entered and then to display it in its reversed form
using arrays. How do i solve the null issue
}

Answer 1

if u wanna use arrays...check this code

Here we split each character of string and store it in an array

https://code.sololearn.com/cSOPlk2eNsYf/?ref=app

Answer 2

You can reverse a string in another way to by using one of the string functions //charAt()..
check my below code
https://code.sololearn.com/cNtNp5Nd78Rq/?ref=app

Answer 3

public static String reverse(String str) {
StringBuilder sb = new StringBuilder();
for (int i = str.length(); i != 0; )
sb.append(str.charAt(--i));
return sb.toString();
}

use of it: {
String test = reverse("Hello world!");
System.out.println(test);
//results: !dlrow olleH
}

Do not forget to use:
str = reverse(str);
Instead of just using:
reverse(str);
If reversing a variable.

Done by array is like:
char[] chars = {readline}.toCharArray();
for (int i = chars.length(); i != 0; )
System.out.print(chars[--i]);
System.out.println();

//Convering String --> char[]
//Counting down on char indexes
// - print char from array
//Breaking line

https://code.sololearn.com/c4wehrc3Bepo