public class Operate { //創(chuàng)建一個(gè)操作符類，同詞法分析中的注釋
	public static final int y = 10;
	char o[]; {
		o = new char[y];
		o[0] = '+';
		o[1] = '-';
		o[2] = '*';
		o[3] = '/';
		o[4] = '(';
		o[5] = ')';
		o[6] = '=';
		o[7] = '<';
		o[8] = '>';
		o[9] = '!';
	}

}