LeetCode - 20. Valid Parentheses

Question:

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.

The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not.

https://leetcode.com/problems/valid-parentheses/

Solution:

public class Solution {
    public boolean isValid(String s) {
        Stack<Character> stack = new Stack<Character>();
  
  char[] array = s.toCharArray();
  if (array.length % 2 != 0) {
   return false;
  }
  
  for(int i =0;i<array.length;i++){
   char c = array[i];
   if(c=='(' || c=='[' || c=='{'){
    stack.push(c);
    continue;
   }
   
   if(stack.isEmpty()==true){
    return false;
   }
   
   if(c==')'){
    if (stack.pop()!='(')
     return false;
   }else if(c==']'){
    if(stack.pop()!='[')
     return false;
   }else if(c=='}'){
    if(stack.pop()!='{')
     return false;
   }else{
    return false;
   }
  }
  
  if(stack.isEmpty()==false){
   return false;
  }else{
   return true;
  }
    }
}