摘要：
1 /* 2 * the calculator 3 * function:+,-,*,/ 4 * not implement 1+2+4+5; 5 * implement 1+2=3+5=9*5..... 6 */ 7 8 import java.awt.*; 9 import java.awt.event.*; 10 11 import javax.swing.*; 12 13 14 15 public class Calculator extends JFrame implements ActionListener { 16 17 ... 阅读全文
