Problem 1: Write a function called isBalanced that takes a string of braces as input and returns true if the braces in the string are balanced. If there are more than Y or more y than in the string, the function should return false. You should make use of the built-in java implementation of the stack data structure under java.util.Stack Example 1: Input: str = "{}{{{{}}" Output: False Example 2: Input: str"f" Output: True import java.util.Stack,; public class Lab2 public static void main (String[] args) String str"if"; boolean ans-isbalanced(str); System.out.println ("Answer "+ ans); // Should be False public static boolean isbalanced (String str){ Stack(); // Example of push // Example of pop // Example of isEmpty stack.push("") stack.pop () stack. isEmpty() // INSERT YOUR CODE HERE