Java balanced expressions check {[()]}

Question

I am trying to create a program that takes a string as an argument into its constructor. I need a method that checks whether the string is a balanced parenthesized expressio

Answer 1

Similar to one of the code above in JAVA but It needs one more else statement added in order to avoid stack comparison with characters other than braces :

else if(bracketPair.containsValue(strExpression.charAt(i)))

public boolean isBalanced(String strExpression){
 Map bracketPair = new HashMap();
  bracketPair.put('(', ')');
  bracketPair.put('[', ']');
  bracketPair.put('{', '}');
  Stack stk = new Stack();
        for(int i =0;i