Java reverse string without using inbuilt functions

In this tutorial, you will learn how to reverse string without using any inbuilt functions. Here, we have created a method to reverse the string and returns a new string with reverse order. In the main method, we have allowed the user to enter the string and invoked the method.

Example:

import java.util.*;

class StringExample 
{
public static int getLength(String myString) {
int i = 0;
try {
while (true) {
myString.charAt(i);
i++;
}
} catch (IndexOutOfBoundsException e) {
return i;
}
}
public static String reverseString(String s) {
char[] reverseStringArray = new char[s.length()];
for (int i = s.length() - 1, j = 0; i != -1; i--, j++) {
reverseStringArray[j] = s.charAt(i);
}
return new String(reverseStringArray);
}

public static void main(String[] args) 
{
Scanner input=new Scanner(System.in);
System.out.print("Enter string:");
String str=input.nextLine();
System.out.println(getLength(str));
System.out.println(reverseString(str));
}
}

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