摘要：
1 2 package Swing_exercise; 3 4 import java.awt.*; 5 6 import javax.swing.*; 7 8 public class Calc extends JFrame { 9 10 JPanel mainPanle, show, rightPanel;11 12 JTextField showIn;13 14 JButton[] jbs = new JButton[9];15 JButton zero = new JButton("0");16 JButton add1 = new JButton("+& 阅读全文
