What is the best way to reverse a string in Java?

In this tutorial we will see which is the best approach to reverse a string in java.

package com.java.programs;

// Write a Java Program to reverse a string.
public class Reverse_A_String {

    public static void main(String[] args) {

        // 1st approach
        Long startTime1 = System.currentTimeMillis();
        String input1 = "Gain java knowledge";
        String output1 = "";

        for(int i = input1.length()-1; i >= 0 ;i--){
            output1 = output1+input1.charAt(i);
        }
        System.out.println("input1 : " +input1)…