Write a Java Program to reverse a string without using String inbuilt function.

Here, we are initializing a string variable str and are making use of the string builder class

1	public class FinalReverseWithoutUsingStringMethods {

2

3	public static void main(String[] args) {

4	// TODO Auto-generated method stub

5	String str = "Automation";

6	StringBuilder str2 = new StringBuilder();

7	str2.append(str);

8	str2 = str2.reverse();     // used string builder to reverse

9	System.out.println(str2);

10

}

11

12

}

Output:

noitamotuA