软件体系结构作业一--单例模式
package text1;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.FileReader;
import java.io.Serializable;
import java.net.URL;
import java.util.ArrayList;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.text.html.StyleSheet;
public class Headmaster extends JFrame implements ActionListener, Serializable {
private static final String CREATE = "创建单个对象";
private static final String name = "陈晓阳";
ArrayList<String> manyArray = new ArrayList<String>();
private static String instance;
private JLabel june = new JLabel("June");
// 按钮
private JButton createOne = new JButton("创建单个对象");
private JButton createMany = new JButton("创建多个对象");
private JButton createInterface = new JButton("接口编程");
private JButton seeOne = new JButton("查看对象");
private JButton seeMany = new JButton("查看对象");
private JButton seeInterface = new JButton("查看对象");
private JPanel panel = new JPanel(new FlowLayout(FlowLayout.CENTER, 20, 20));
// 字体颜色自我定义
Color juneFont = new Color(85, 0, 119);
Color createFont = new Color(102, 102, 187);
Color backFont = new Color(238, 204, 187);
Color backFont2 = new Color(204, 238, 85);
Color backFont3 = new Color(221, 255, 255);
public Headmaster() {
add(panel);
panel.setBackground(Color.LIGHT_GRAY);
// panel.setLayout(new GridLayout(3,2,20,20));
panel.setOpaque(false); // 让他透明
panel.setLayout(null); // 不采用GridLayout()来定位，因为那样整个按钮会被填充，不好看
// 按钮添加及相应监听器的添加
panel.add(june);
createOne.addActionListener(this);
panel.add(createOne);
seeOne.addActionListener(this);
panel.add(seeOne);
createMany.addActionListener(this);
panel.add(createMany);
seeMany.addActionListener(this);
panel.add(seeMany);
createInterface.addActionListener(this);
panel.add(createInterface);
seeInterface.addActionListener(this);
panel.add(seeInterface);
// 按钮的定位，要精确计算
june.setBounds(10, 15, 200, 70);
createOne.setBounds(28, 148, 130, 40);
seeOne.setBounds(172, 148, 110, 40);
createMany.setBounds(28, 216, 130, 40);
seeMany.setBounds(172, 216, 110, 40);
createInterface.setBounds(28, 284, 130, 40);
seeInterface.setBounds(172, 284, 110, 40);
// 字体设置
Font fontLabel = new Font("Serif", Font.BOLD, 90);
june.setFont(fontLabel);
june.setForeground(juneFont);
Font font = new Font("Serif", Font.BOLD, 15);
createOne.setFont(font);
createMany.setFont(font);
seeOne.setFont(font);
seeMany.setFont(font);
createInterface.setFont(font);
seeInterface.setFont(font);
createOne.setForeground(createFont);
seeOne.setForeground(createFont);
createMany.setForeground(createFont);
seeMany.setForeground(createFont);
createInterface.setForeground(Color.GREEN);
seeInterface.setForeground(Color.GREEN);
// 按钮背景的设置
createOne.setBackground(backFont);
createMany.setBackground(backFont2);
seeOne.setBackground(backFont);
seeMany.setBackground(backFont2);
createInterface.setBackground(backFont3);
seeInterface.setBackground(backFont3);
}
public static String getInstance(String name) {
if (instance == null && !name.equals(null))
instance = Headmaster.name;
return instance;
}
public String getManyInstance(int num, String name) {
if (num != 0 && !name.equals(null))
instance = name;
manyArray.add(instance);
return instance;
}
public void actionPerformed(ActionEvent evt) {
if (evt.getSource() == createOne) {
try {
createOne();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}// 创建唯一对象
}
if (evt.getSource() == createMany) {
try {
createMany();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}// 创建限定对象
}
if (evt.getSource() == seeOne) {
try {
seeOne();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}// 查看唯一对象
}
if (evt.getSource() == seeMany) {
try {
seeMany();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}// 查看多个对象
}
}
public void seeOne() {
JOptionPane.showMessageDialog(null, this.name, "单例模式--创建唯一个对象--创建结果",
JOptionPane.INFORMATION_MESSAGE);
}
public void seeMany() {
String all = "";
for (int i = 0; i < manyArray.size(); i++) {
all = all + manyArray.get(i) + "\n";
}
JOptionPane.showMessageDialog(null, all, "单例模式--创建" + manyArray.size()
+ "个对象--创建结果", JOptionPane.INFORMATION_MESSAGE);
}
public String createOne() {
String inputName = JOptionPane.showInputDialog(null, "输入所创建的校长名字",
"单例模式--创建唯一对象", JOptionPane.QUESTION_MESSAGE);
if (inputName != null) {
String name = (String) this.getInstance(inputName);
JOptionPane.showMessageDialog(null, name.toString(),
"单例模式--创建唯一对象--创建结果", JOptionPane.INFORMATION_MESSAGE);
}
if (inputName == null)
JOptionPane.showMessageDialog(null, "输入为空，请重新输入！", "警告！",
JOptionPane.ERROR_MESSAGE);
return inputName;
}
public void createMany() {
int inputNumbers = Integer.parseInt(JOptionPane.showInputDialog(null,
"输入所要创建对象的限定个数", "单例模式--创建限定个数的对象",
JOptionPane.QUESTION_MESSAGE));
if (JOptionPane.OK_OPTION == 0)
if (inputNumbers != 0) {
many(inputNumbers);
}
if (inputNumbers == 0)
JOptionPane.showMessageDialog(null, "输入为空，请重新输入！", "警告！",
JOptionPane.ERROR_MESSAGE);
}
public void many(int num) {
for (int i = num; i > 0; i--) {
String inputName = JOptionPane.showInputDialog(null, "输入所创建的对象名字",
"单例模式--创建" + num + "对象", JOptionPane.QUESTION_MESSAGE);
if (inputName != null) {
String name = (String) this.getManyInstance(i, inputName);
JOptionPane.showMessageDialog(null, name.toString(), "单例模式--创建"
+ num + "个对象--创建结果", JOptionPane.INFORMATION_MESSAGE);
}
if (inputName == null)
JOptionPane.showMessageDialog(null, "输入为空，请重新输入！", "警告！",
JOptionPane.ERROR_MESSAGE);
}
}
public static void main(String[] args) {
JFrame frame = new Headmaster();
frame.setSize(530, 530);
frame.setTitle("实验一：单例模式+接口编程");
frame.setVisible(true);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//背景图片设置
ImageIcon bg = new ImageIcon("jay.jpg");// 把背景图片显示在一个标签里
JLabel label = new JLabel(bg); // 把标签的大小位置设置为图片刚好填充整个面
label.setBounds(0, 0, bg.getIconWidth(), bg.getIconHeight()); // 添加frame的第二层
frame.getLayeredPane().add(label, new Integer(Integer.MIN_VALUE)); // 获取frame的最上层面板为了设置其背景颜色（JPanel有设置透明的方法）
JPanel jp = (JPanel) frame.getContentPane();
jp.setOpaque(false);// 设置透明
}
}
实验一：单例模式
(1) 单例模式（必做 80分）
建立一个界面，不管创建多少次现任校长，都只能创建一个“陈晓阳”对象，并验证获取的校长都是“陈晓阳”。
(2) 单例模式（选做 10分）
使用单例模式的思想实现多例模式，确保系统中某个类的对象只能存在有限个，如两个或三个，设计并编写代码实现一个多例类。
(3) 接口编程模式（选做 5分）
接口编程的木有做，先这样啦！