栈验证表达式中的括号是否匹配

import java.util.Stack;

public class 语法匹配 {
	public static void main(String[] args) {
		String s = "[";
		检测(s);
	}

	private static void 检测(String s) {
		Stack stack = new Stack();
		for(int  i = 0 ;i < s.length() ;i++){
			char c = s.charAt(i);
			if(c == '(' || c == '{' || c == '['){
				stack.add(c);
			 }
			else if(c == ')'){
				if(stack.peek() == '('){
					stack.pop();
				}else{
					System.out.println("语法错误，" + c + "不匹配");
					return ;
				}
			}
			else if(c == ']'){
				if(stack.peek() == '['){
					stack.pop();
				}else{
					System.out.println("语法错误，" + c + "不匹配");
					return ;
				}
			}
			else if(c == '}'){
				if(stack.peek() == '{'){
					stack.pop();
				}else{
					System.out.println("语法错误，" + c + "不匹配");
					return ;
				}
			}
		}
		if(stack.isEmpty()){
			System.out.println("语法正确");
		}else{
			System.out.println("语法错误");
		}
		
	}

}