如何判断一个表达式中的左右括号是否匹配

public class Bracket {


    static boolean isMatched(String brackets){
        int string_size = brackets.length();
        Stack<Character> match = new Stack<Character>();
        char symbol ;
        boolean is_match = true ;


        for(int i = 0 ; i<string_size ; i++){
            symbol = brackets.charAt(i);
            if(symbol == '{' || symbol == '[' || symbol == '('){
                match.push(symbol);
            }
            if(symbol == '}' || symbol == ']' || symbol == ')'){
                if(match.isEmpty()){
                    is_match = false ;
                    break ;
                }else{
                    if((symbol =='}' && match.peek() =='{')
                            ||(symbol ==']' && match.peek() =='[')
                            ||(symbol ==')' && match.peek() =='(')){
                        match.pop();
                    }else{
                        is_match = false ;
                        break ;
                    }
                }
            }
        }
        if(!match.isEmpty()){
            is_match = false ;
        }
        return is_match ;
    }

    public static void main(String[] args) {
        String brackets = "(())abc{[]()}" ;
        System.out.println(Bracket.isMatched(brackets));
    }

}