帮我用最简单的java代码写个计算器！ 代码越少越好
import java.awt.*;import java.awt.event.*;public class jisuanqi extends WindowAdapter { Panel p1 = new Panel(); Panel p2 = new Panel(); Panel p3 = new Panel(); TextField txt; private Button[] b = new Button[17]; private String ss[] = { "7", "8", "9", "+",···
