package?com.homework.lhh;

import?java.awt.EventQueue;

import?javax.swing.Jframe;
import?javax.swing.JPanel;
import?javax.swing.border.EmptyBorder;

import?javax.swing.JTextField;
import?javax.swing.JButton;
import?java.awt.Font;
import?java.awt.Toolkit;
import?java.awt.event.ActionListener;
import?java.awt.event.ActionEvent;
import?java.awt.Color;
import?javax.swing.JLabel;

@SuppressWarnings（“serial“）
public?class?Ex03?extends?Jframe?{

	private?static?String?strOne?=?““;//?存數字
	private?static?String?strTwo?=?““;//?存數字
	private?static?double?result;//?結果

	private?String?operator?=?““;//?運算符號
	private?static?double?numOne;
	private?static?double?numTwo;

	private?JPanel?contentPane;
	private?JTextField?textLED;

	private?JButton?btn0;
	private?JButton?btn1;
	private?JButton?btn2;
	private?JButton?btn3;
	private?JButton?btn4;
	private?JButton?btn5;
	private?JButton?btn6;
	private?JButton?btn7;
	private?JButton?btn8;
	private?JButton?btn9;

	private?JButton?btnReset;//?清零
	private?JButton?btnWait;//?等號
	private?JButton?btnAdd;//?加號
	private?JButton?btnMinus;//?減號
	private?JButton?btnRide;//?乘號
	private?JButton?btnDivide;//?除號

	public?static?void?main（String[]?args）?{

		EventQueue.invokeLater（new?Runnable（）?{
			public?void?run（）?{
				try?{
					Ex03?frame?=?new?Ex03（）;
					int?w?=?（Toolkit.getDefaultToolkit（）.getScreenSize（）.width?-?WIDTH）?/?2;
					int?h?=?（Toolkit.getDefaultToolkit（）.getScreenSize（）.height?-?HEIGHT）?/?2;
					frame.setLocation（w?h）;
					frame.setVisible（true）;
					frame.setResizable（false）;

				}?catch?（Exception?e）?{
					e.printStackTrace（）;
				}
			}
		}）;
	}

	public?Ex03（）?{

		settitle（“\u7B80\u5355\u5B9E\u73B0\u7684\u8BA1\u7B97\u5668“）;
		setDefaultCloseOperation（Jframe.EXIT_ON_CLOSE）;
		setBounds（0?-57?472?546）;
		contentPane?=?new?JPanel（）;
		contentPane.setBackground（new?Color（119?136?153））;
		contentPane.setBorder（new?EmptyBorder（5?5?5?5））;
		setContentPane（contentPane）;
		contentPane.setLayout（null）;

		textLED?=?new?JTextField（）;
		textLED.setFont（new?Font（“宋體“?Font.PLAIN?18））;
		textLED.setBounds（14?13?428?55）;
		contentPane.add（textLED）;
		textLED.setColumns（10）;
		textLED.setHorizontalAlignment（JTextField.RIGHT）;//?數字向右排列

		btn1?=?new?JButton（“1“）;
		btn1.setBounds（14?288?97?78）;
		contentPane.add（btn1）;

		btn2?=?new?JButton（“2“）;
		btn2.setBounds（125?288?97?78）;
		contentPane.add（btn2）;

		btn3?=?new?JButton（“3“）;
		btn3.setBounds（236?288?97?78）;
		contentPane.add（btn3）;

		btn4?=?new?JButton（“4“）;
		btn4.setBounds（14?197?97?78）;
		contentPane.add（btn4）;

		btn5?=?new?JButton（“5“）;
		btn5.setBounds（125?197?97?78）;
		contentPane.add（btn5）;

		btn6?=?new?JButton（“6“）;
		btn6.setBounds（236?197?97?78）;
		contentPane.add（btn6）;

		btn7?=?new?JButton（“7“）;
		btn7.setBounds（14?106?97?78）;
		contentPane.add（btn7）;

		btn8?=?new?JButton（“8“）;
		btn8.setBounds（12