Java String Reverse Program using Recursion

Write a Java string reverse program using recursion or recursive functions. In this example, the user-defined method checks whether the string is empty, and if it’s true, it prints the exact same or empty space. Otherwise, it performs the string reverse recursively.

package RemainingSimplePrograms;

import java.util.Scanner;

public class StringReverseRecur1 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {

		sc= new Scanner(System.in);
		
		System.out.print("Please Enter String to Reverse =  ");
		String str = sc.nextLine();
		
		String revString = stringReverse(str);	
		System.out.println("The reversed String =  " + revString);
	}
	
	public static String stringReverse(String str)
	{
		if(str.isEmpty())
			return str;
		
		return stringReverse(str.substring(1)) + str.charAt(0);
	}
}

Java String Reverse Program using Recursion

It is another way of writing string reverse programs in Java using recursion.

package RemainingSimplePrograms;

import java.util.Scanner;

public class Example2 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {

		sc= new Scanner(System.in);
		
		System.out.print("Please Enter =  ");
		String str = sc.nextLine();
		
		System.out.print("The Result =  " );
		strRev(str);	
	}
	
	public static void strRev(String str)
	{
		if(str.isEmpty()) {
			System.out.print(str);
		}
		else {
			System.out.print(str.charAt(str.length() - 1));
			strRev(str.substring(0, str.length() - 1));
		}	
	}
}

Please Enter =  Welcome to Java World!
The Result =  !dlroW avaJ ot emocleW