JAVA——实验5 GUI类与问题域类的交互

一、实验目的

1.掌握Java中设计GUI界面的方法
2.掌握Java GUI界面上的事件监听机制
3.掌握GUI类与问题域交互的方法

二、实验内容

1. 设计Manager类、GUI类及事件处理

(1)设计一个Manager类并编写代码， Manager类的属性有姓名，工号，基本工资，小时工资(元/小时）。自定义方法：至少包括计算月工资的方法：calSalary()。
(2)编写一个GUI类，输入manager的姓名、工号，基本工资，月工作时间（小时），创建对象，调用calSalary()方法计算出该manager的月工资，并显示在用户界面上。

运行结果：

源码：

package managerGUI;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.*;

import javax.swing.*;

public class ManagerGUI {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new GUI();
	}

}

class GUI extends JFrame implements ActionListener {// 继承JFrame及接口
	private String name;
	private String ID;
	private String basic_salary;
	private String hourly_salary;
	private String monthly_salary;
	// 定义组件
	private JLabel jl1, jl2, jl3, jl4, jl5;// 定义5个标签
	private JTextField jt1, jt2, jt3, jt4, jt5;// 定义6个文本框
	private JTextArea jt6;
	private JButton jb1, jb2;// 两个按钮
	private JPanel jp1, jp2, jp3, jp4, jp5;// 中间容器
	// 构造方法

	public GUI() {

		// 创建组件
		jl1 = new JLabel("name");
		jl2 = new JLabel("empNo");
		jl3 = new JLabel("baseSalsry");
		jl4 = new JLabel("wageOfHour");
		jl5 = new JLabel("wageOfMonthly");
		jb1 = new JButton("calculate");
		jb2 = new JButton("cancel");
		jt1 = new JTextField(10);
		jt2 = new JTextField(10);
		jt3 = new JTextField(10);
		jt4 = new JTextField(10);
		jt5 = new JTextField(10);
		jt6 = new JTextArea();
		jp1 = new JPanel();
		jp2 = new JPanel();
		jp3 = new JPanel();
		jp4 = new JPanel();
		jp5 = new JPanel();

		// 布局管理
		// jt6.setHorizontalAlignment(JTextField.LEFT);
		jt6.setText("result:");
		jp5.setLayout(new GridLayout(3, 1, 10, 10));
		this.setLayout(new GridLayout(3, 1, 10, 10));// GridLayout(几行，几列，左右间距，上下间距)
		jp1.add(jl1);
		jp1.add(jt1);
		jp1.add(jl2);
		jp1.add(jt2);
		jp2.add(jl3);
		jp2.add(jt3);
		jp2.add(jl4);
		jp2.add(jt4);
		jp3.add(jl5);
		jp3.add(jt5);
		jp4.add(jb1);
		jp4.add(jb2);
		jp5.add(jp2, BorderLayout.NORTH);
		jp5.add(jp3, BorderLayout.CENTER);
		jp5.add(jp4, BorderLayout.SOUTH);

		// 监听注册
		jb1.addActionListener(this);
		jb2.addActionListener(this);

		// 设置窗口

		this.add(jp1, BorderLayout.NORTH);
		this.add(jp5, BorderLayout.CENTER);
		this.add(jt6, BorderLayout.SOUTH);

		this.setTitle("calculate of Salary");
		this.setSize(400, 500);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		
		if (e.getSource() == jb1)
			jt6.setText(calSalary());
		else if (e.getSource() == jb2)
			cancel();

	}

	public String calSalary() {
		this.name = jt1.getText();
		this.ID = jt2.getText();
		this.basic_salary = jt3.getText();
		this.hourly_salary = jt4.getText();
		this.monthly_salary = jt5.getText();
		return "result:" + "\n" + "name:" + name + "\n" + "empNo:" + ID + "\n" + "baseSalsry:" + basic_salary + "\n"
				+ "wageOfHour:" + hourly_salary + "\n" + "wageOfMonthly:" + monthly_salary + "\n" + "calSalary:"
				+ String.valueOf(Double.parseDouble(basic_salary)
						+ Double.parseDouble(monthly_salary) * Double.parseDouble(hourly_salary));
	}

	public void cancel() {
		this.name = "无";
		this.ID = "无";
		this.basic_salary  = "0";
		this.hourly_salary = "0";
		this.monthly_salary = "0";
		jt1.setText("");
		jt2.setText("");
		jt3.setText("");
		jt4.setText("");
		jt5.setText("");
	}
}

2 用户登录－GUI及事件响应

编写一个JFrame框架应用程序，如图，并根据登录情况显示相应的提示信息。假设用户名为admin，密码为admin。
事件响应：输入正确的用户名和密码，系统提示“Seccussful!Username and password is correct!”，否则提示“Username or password isn’t correct!”
说明：两个消息提示框不需要自己编写界面类，使用JOptionPane类调用showMessageDialog()

运行结果：

源码：

package userGUICome;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;

public class UserGUIDome {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new UserGUI();
	}

}

class UserGUI extends JFrame implements ActionListener {
	// 定义加创建
	private JLabel jl1, jl2;
	private JTextField jt1;
	private JPasswordField jt2;
	private JButton jb1, jb2;
	private JPanel jp1, jp2, jp3;

	public UserGUI() {
		jl1 = new JLabel("UserName");
		jl2 = new JLabel("Password");
		jt1 = new JTextField(10);
		jt2 = new JPasswordField(10);
		jb1 = new JButton("Login");
		jb2 = new JButton("Cancel");
		jp1 = new JPanel();
		jp2 = new JPanel();
		jp3 = new JPanel();
		// 设置字体
		Font font = new Font("楷体", Font.BOLD, 18);
		jl1.setFont(font);
		jl2.setFont(font);
		jb1.setFont(font);
		jb2.setFont(font);
		// 美化字的颜色
		Color color = new Color(0, 0, 255);
		jl1.setForeground(color.blue);
		jl2.setForeground(color);
		jb1.setForeground(color);
		jb2.setForeground(color);

		jp1.add(jl1);
		jp1.add(jt1);
		jp2.add(jl2);
		jp2.add(jt2);
		jp3.add(jb1);
		jp3.add(jb2);
		// 设置图标
		ImageIcon icon = new ImageIcon("src\\image\\QQ头像.png");//在JAVA的src文件夹里包含image文件其中有QQ头像.png照片
		this.setIconImage(icon.getImage());
		// 监听注册
		jb1.addActionListener(this);
		jb2.addActionListener(this);
		// 设置布局，添加组件
		this.setLayout(new GridLayout(3, 1));

		this.add(jp1);
		this.add(jp2);
		this.add(jp3);

		// 设置窗口
		this.setTitle("Login");
		this.setSize(300, 180);
		this.setLocation(400, 400);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		if (e.getSource() == jb1)
			Login();
		else if (e.getSource() == jb2)
			clear1();
	}

	public void Login() {
		String userName = "admin";
		String password = "admin";
		String un = jt1.getText().trim();// 去除前后空格
		String pw = String.valueOf(jt2.getPassword()).trim();
		if (un.equals(userName) && pw.equals(password))
			JOptionPane.showMessageDialog(null, "Seccussful!\nUsername and password is correct!", "notice", 1);
		else {
			JOptionPane.showMessageDialog(null, "Username or password isn't correct!", "notice", 2);
			clear1();
		}
	}

	public void clear1() {
		jt1.setText("");
		jt2.setText("");
	}
}

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