java 实验6 图形用户界面设计试验(2)

共两大题窗体实现（略去测试类即实例化自定义窗体）

小结：

1. JRadioButton 单选按钮
　 ButtonGroup 按钮集合（加入单选按钮）
　清空选项需让ButtonGroup调用clearSelection()函数
　 bg.clearSelection();

2. JCheckBox 多选
　清空选项需实例调用 jcb1.setSelected(false);

3. JComboBox 下拉列表
　利用additem（str）增加选项

4. 实现树切换后的画布切换
　JTabbedPane(选项卡) 清空所有组建removeAll();再增加组建

1、完成如下登陆界面，其中用户名为abc。密码为1234，登陆成功登陆后弹出消息框，“欢迎您，abc 登陆”；如果密码输入错误，弹出对话框，显示“用户名和密码错误”，并清空输入的信息。

Login窗体类

package login;

import javax.swing.JFrame;

import java.awt.FlowLayout;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.*;

public class Login extends JFrame implements ActionListener{

    private static String USERNAME="abc";

    private static String PASSWORD="1234";

    JButton jb1,jb2;

    JTextField text1,text2;

    JDialog jd;

    Login() {

        setTitle("the login window");

        JLabel label1=new JLabel("username                ");

        JLabel label2=new JLabel("password                ");

        text1=new JTextField(10);

        text2=new JTextField(10);

        jb1=new JButton("confirm");

        jb2=new JButton("cancel");

        jb1.addActionListener(this);

        setLayout(new GridLayout(3,1));

        JPanel jp1=new JPanel();

        JPanel jp2=new JPanel();

        JPanel jp3=new JPanel();

        jp1.add(label1);

        jp1.add(text1);

        jp2.add(label2);

        jp2.add(text2);

        jp3.add(jb1);

        jp3.add(jb2);

        add(jp1);

        add(jp2);

        add(jp3);

        setBounds(100,100,300,150);

        setVisible(true);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }

    @Override

    public void actionPerformed(ActionEvent e) {

        if(e.getSource()==jb1);

            if(text1.getText().equals(USERNAME)&&text2.getText().equals(PASSWORD)) {

                JOptionPane.showMessageDialog(this, "输入正确");

                new Info();

                setVisible(false);

            }

            else{

                JOptionPane.showMessageDialog(this, "用户名和密码错误");

                text1.setText(null);

                text2.setText(null);

            }

    }

}

结果

2、接第一题，如果登录成功，显示下面的界面：

（1）输入username，sex，department，hobby，telephoneNo, resume，点击“confirm”按钮，左边的信息显示在右边的区域，如下图所示：

（2）点击“Cancel”，弹出对话框请用户确认，如果用户选择“确定”，就清空左边和右边的信息。

（3）点击“Save”，在控制台显示：你的学号+你的姓名+“信息已保存”。

（4）菜单“File”下显示 “New” 和 “Open”，指定“New”的快捷方式是Ctrl+N，点击“New”，将下面各输入部分清空（Sex项与Department项置为默认）；点击“Open”，在控制台显示：你的学号+你的姓名+“点击了Open菜单项”。

（5）菜单“Edit”下显示“Cut”和“Copy”，点击“Cut”，在控制台显示：你的学号+你的姓名+“点击了Cut菜单项”; 点击“Copy”，在控制台显示：你的学号+你的姓名+“点击了Copy菜单项”。

info消息窗体类(大窗体实现)

package login;

import java.awt.BorderLayout;

import java.awt.Component;

import java.awt.FlowLayout;

import java.awt.GridBagLayout;

import java.awt.GridLayout;

import java.awt.Label;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.InputEvent;

import java.awt.event.KeyEvent;

import javax.swing.*;

public class Info extends JFrame{

    Info(){

        //一些基本组建

        JLabel label1 = new JLabel("Please input your information",Label.LEFT);

        JLabel label2 = new JLabel("username");

        JLabel label3 = new JLabel("sex");

        JLabel label4 = new JLabel("department");

        JLabel label5 = new JLabel("hobby");

        JLabel label6 = new JLabel("telephoneNo");

        JLabel label7 = new JLabel("resume");

        JLabel label8 = new JLabel("your information");

        JTextField text1=new JTextField(20);

        JTextField text2=new JTextField(20);

        JTextArea text3=new JTextArea(20,20);

        JTextArea text4=new JTextArea(100,100);

        JPanel jp1=new JPanel();

        JPanel jp2=new JPanel();

        JPanel jp3=new JPanel();

        JPanel jp4=new JPanel();

        JPanel jp5=new JPanel();

        JPanel jp6=new JPanel();

        JPanel jp7=new JPanel();

        JPanel left=new JPanel();

        JPanel right=new JPanel();

        JButton jb1=new JButton("Confirm");

        JButton jb2=new JButton("Cancel");

        JButton jb3=new JButton("Save");

        //department下拉列表

        JComboBox<String> box=new JComboBox<>();

        box.addItem("Computer");

        box.addItem("Math");

        box.addItem("Energy");

        box.addItem("Law");

        //sex单选

        JRadioButton sex1= new JRadioButton("male");

        JRadioButton sex2= new JRadioButton("female");

        ButtonGroup bg=new ButtonGroup();

        bg.add(sex1);

        bg.add(sex2);

        //hobby多选

        JCheckBox jcb1=new JCheckBox("music");

        JCheckBox jcb2=new JCheckBox("reading");

        JCheckBox jcb3=new JCheckBox("cooking");

        //设置菜单

        JMenuBar menubar=new JMenuBar();

        JMenu menu1=new JMenu("File");

        JMenu menu2=new JMenu("Edit");

        JMenuItem item1=new JMenuItem("New");

        JMenuItem item2=new JMenuItem("Open");

        JMenuItem item3=new JMenuItem("Cut");

        JMenuItem item4=new JMenuItem("Copy");

        item1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK));

        menu1.add(item1);

        menu1.addSeparator();

        menu1.add(item2);

        menu2.add(item3);

        menu2.addSeparator();

        menu2.add(item4);

        menubar.add(menu1);

        menubar.add(menu2);

        setJMenuBar(menubar);

        item1.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                    text1.setText(null);

                    text2.setText(null);

                    text3.setText(null);

                    text4.setText(null);

                    //想重置JRadioButton必让ButtonGroup调用clearSelection()函数

                    bg.clearSelection();

                    jcb1.setSelected(false);

                    jcb2.setSelected(false);

                    jcb3.setSelected(false);

                }

        });

        item2.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                System.out.println("20171335+cf+“点击了Open菜单项”");

            }

        });

        item3.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                System.out.println("20171335+cf+“点击了Cut菜单项”");

            }

        });

        item4.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                System.out.println("20171335+cf+“点击了Copy菜单项”");

            }

        });

        //设置左半组件

        jp1.add(sex1);

        jp1.add(sex2);

        jp2.add(jcb1);

        jp2.add(jcb2);

        jp2.add(jcb3);

        Box basebox,box1,box2;

        box1=Box.createVerticalBox();

        box2=Box.createVerticalBox();

        basebox=Box.createHorizontalBox();

        box1.add(label2);

        box1.add(Box.createVerticalStrut(22));

        box1.add(label3);

        box1.add(Box.createVerticalStrut(22));

        box1.add(label4);

        box1.add(Box.createVerticalStrut(22));

        box1.add(label5);

        box1.add(Box.createVerticalStrut(22));

        box1.add(label6);

        box1.add(Box.createVerticalStrut(180));

        box1.add(label7);

        box2.add(text1);

        box2.add(Box.createVerticalStrut(10));

        box2.add(jp1);

        box2.add(Box.createVerticalStrut(10));

        box2.add(box);

        box2.add(Box.createVerticalStrut(10));

        box2.add(jp2);

        box2.add(Box.createVerticalStrut(10));

        box2.add(text2);

        box2.add(Box.createVerticalStrut(10));

        box2.add(new JScrollPane(text3));

        basebox.add(box1);

        basebox.add(Box.createHorizontalStrut(20));

        basebox.add(box2);

        jp3.add(jb1);

        jp3.add(jb2);

        jp5.add(jb1);

        jp5.add(jb2);

        left.setLayout(new BoxLayout(left, BoxLayout.Y_AXIS));

        left.add(label1);

        left.add(basebox);

        left.add(jp5);

        //设置右半组件

        jp6.add(jb3);

        right.setLayout(new BoxLayout(right, BoxLayout.Y_AXIS));

        right.add(label8);

        right.add(text4);

        right.add(jp6);

        //设置confirm键

        jb1.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                String username = text1.getText();

                String sex ="";

                if(sex1.isSelected())

                    sex=sex1.getText();

                else

                    sex=sex2.getText();

                String department = box.getSelectedItem().toString();

                String hobby="";

                for(Component c:jp2.getComponents()) {

                    if(c instanceof JCheckBox) {

                        if(((JCheckBox)c).isSelected()) {

                            hobby+=((JCheckBox)c).getText();

                            hobby+=",";

                        }

                    }

                }

                String telephonNo=text2.getText();

                String resume=text3.getText();

                String result="my name:       "+username+"\nsex:                "+sex+"\ndepartment:    "

                +department+"\nhobby:            "+hobby+"\ntelephonNo:    "+telephonNo+"\nresume:          "+resume;

                text4.setText(result);

            }

        });

        //设置Cancel键

        jb2.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                int clean = JOptionPane.showConfirmDialog(null, "Do you confirm to delete it?","Warning",JOptionPane.OK_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE);

                if(clean==JOptionPane.YES_OPTION) {

                    text1.setText(null);

                    text2.setText(null);

                    text3.setText(null);

                    text4.setText(null);

                    //想重置JRadioButton必让ButtonGroup调用clearSelection()函数

                    bg.clearSelection();

                    jcb1.setSelected(false);

                    jcb2.setSelected(false);

                    jcb3.setSelected(false);

                }

            }

        });

        //设置Save键

        jb3.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                Saveinfo.save(text4.getText());

                System.out.println("保存成功");

            }

        });

        //整体画布

        JSplitPane all=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,left,right);

        add(all,BorderLayout.CENTER);

        //设置整体

        setTitle("info");

        setBounds(100,100,800,500);

        setVisible(true);

        validate();

        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

    }

}

储存信息类（Save键用）

package login;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.nio.file.Path;

public class Saveinfo {

    public static void save(String str){

        File directory = new File(".");

        String path = null;

        try {

            path = directory.getCanonicalPath();//获取当前路径

            path +="\\info.txt";

            System.out.println(path);

            BufferedWriter  b=new BufferedWriter(new OutputStreamWriter(new FileOutputStream(path)));

            b.write(str);

            b.close();

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}

结果

3、参照如下界面，利用JTree, JSplitPane, JTable, JTabbedPane完成。

(1) 选中“沪宁高速A段维修工程”，三个页面如下：

(2) 选中“沪宁高速B段维修工程”，出现相应的页面，仅以“专家设置”举例如下：

(3) 选中任意一个表格，选中一行，在控制台输出选中行的内容，如下图选中了“沪宁高速A段维修工程”中“竞标单位设置”中的一行：

在控制台输出了相应内容：

窗体类

package 工程项目招标设置;

import java.awt.BorderLayout;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JSplitPane;

import javax.swing.JTabbedPane;

import javax.swing.JTable;

import javax.swing.JTree;

import javax.swing.event.TreeSelectionEvent;

import javax.swing.event.TreeSelectionListener;

import javax.swing.tree.DefaultMutableTreeNode;

public class Project extends JFrame {

    Project(){

        //A“指标设置”表格

        JPanel jp1=new JPanel();

        jp1.setLayout(new BorderLayout());

        Object[] Names1 = {"指标编号", "指标名称", "是否入选", "指标分值"};

        Object[][] a= {

                {10,"施工性质","入选",20},

                {11,"以往施工项目","入选",20},

                {12,"注册资金","入选",30},

                {13,"企业总资产","不选",20},

                {14,"公司管理水平","不选",10},

        };

        JTable tabel1=new JTable(a,Names1);

        tabel1.setShowGrid(true);

        tabel1.addMouseListener(new MouseAdapter() {

            public void mouseClicked(MouseEvent e){

            for (int i = 0; i < tabel1.getColumnCount(); i++)

                System.out.print(tabel1.getModel().getValueAt(tabel1.getSelectedRow(), i)+" ");

            System.out.println();

        }});

        jp1.add(new JScrollPane(tabel1),BorderLayout.NORTH);

        //A"竞标单位设置"表格

        JPanel jp2=new JPanel();

        jp2.setLayout(new BorderLayout());

        Object[] Names2 = {"公司编号", "公司名称", "法人代表", "成立时间","地址"};

        Object[][] b= {

                {001,"华西沪东建筑公司","张三","2000-2-1","上海市浦东新区"},

                {002,"瑞丰建筑公司","李四","1998-3-1","上海市浦东新区"}

        };

        JTable tabel2=new JTable(b,Names2);

        tabel2.setShowGrid(true);

        jp2.add(new JScrollPane(tabel2),BorderLayout.NORTH);

        tabel2.addMouseListener(new MouseAdapter() {

            public void mouseClicked(MouseEvent e){

            for (int i = 0; i < tabel2.getColumnCount(); i++)

                System.out.print(tabel2.getModel().getValueAt(tabel2.getSelectedRow(), i)+" ");

            System.out.println();

        }});

        //A“专家设置”表格

        JPanel jp3=new JPanel();

        jp3.setLayout(new BorderLayout());

        Object[] Names3 = {"专家编号", "专家名称", "性别", "学历","单位"};

        Object[][] c= {

                {001,"张小三","男","博士","上海建筑研究所"},

                {002,"刘芳芳","女","博士","北京建筑研究所"}

        };

        JTable tabel3=new JTable(c,Names3);

        tabel3.setShowGrid(true);

        jp3.add(new JScrollPane(tabel3),BorderLayout.NORTH);

        tabel3.addMouseListener(new MouseAdapter() {

            public void mouseClicked(MouseEvent e){

            for (int i = 0; i < tabel3.getColumnCount(); i++)

                System.out.print(tabel3.getModel().getValueAt(tabel3.getSelectedRow(), i)+" ");

            System.out.println();

        }});

        //B“指标设置”表格

        JPanel jp4=new JPanel();

        jp4.setLayout(new BorderLayout());

        Object[] Names4 = {"指标编号", "指标名称", "是否入选", "指标分值"};

        Object[][] d= {

                {1,"施工性质","不选",30},

                {2,"以往施工项目","入选",40},

                {3,"注册资金","入选",60},

                {4,"企业总资产","不选",10},

                {5,"公司管理水平","不选",20},

        };

        JTable tabel4=new JTable(d,Names4);

        tabel4.setShowGrid(true);

        jp4.add(new JScrollPane(tabel4),BorderLayout.NORTH);

        tabel4.addMouseListener(new MouseAdapter() {

            public void mouseClicked(MouseEvent e){

            for (int i = 0; i < tabel4.getColumnCount(); i++)

                System.out.print(tabel4.getModel().getValueAt(tabel4.getSelectedRow(), i)+" ");

            System.out.println();

        }});

        //B"竞标单位设置"表格

        JPanel jp5=new JPanel();

        jp5.setLayout(new BorderLayout());

        Object[] Names5 = {"公司编号", "公司名称", "法人代表", "成立时间","地址"};

        Object[][] e= {

                {001,"华东建筑公司","张三","2001-2-1","上海市浦东新区"},

                {002,"瑞丰建筑公司","李四","2000-3-1","上海市浦东新区"}

        };

        JTable tabel5=new JTable(e,Names5);

        tabel5.setShowGrid(true);

        jp5.add(new JScrollPane(tabel5),BorderLayout.NORTH);

        tabel5.addMouseListener(new MouseAdapter() {

            public void mouseClicked(MouseEvent e){

            for (int i = 0; i < tabel5.getColumnCount(); i++)

                System.out.print(tabel5.getModel().getValueAt(tabel5.getSelectedRow(), i)+" ");

            System.out.println();

        }});

        //B“专家设置”表格

        JPanel jp6=new JPanel();

        jp6.setLayout(new BorderLayout());

        Object[] Names6 = {"专家编号", "专家名称", "性别", "学历","单位"};

        Object[][] f= {

                {001,"任芳","男","硕士","华北建筑研究所"},

                {002,"刘齐齐","女","博士","华东建筑研究所"}

        };

        JTable tabel6=new JTable(f,Names6);

        tabel6.setShowGrid(true);

        jp6.add(new JScrollPane(tabel6),BorderLayout.NORTH);

        tabel6.addMouseListener(new MouseAdapter() {

            public void mouseClicked(MouseEvent e){

            for (int i = 0; i < tabel6.getColumnCount(); i++)

                System.out.print(tabel6.getModel().getValueAt(tabel6.getSelectedRow(), i)+" ");

            System.out.println();

        }});

        //选项卡-收录表格

        JTabbedPane p=new JTabbedPane(JTabbedPane.NORTH);

        //“招标项目名”树

        DefaultMutableTreeNode root = new DefaultMutableTreeNode("招标项目名");

        DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("沪宁高速A段维修工程");

        DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("沪宁高速B段维修工程");

        root.add(node1);

        root.add(node2);

        JTree tree=new JTree(root);

        tree.addTreeSelectionListener(new TreeSelectionListener() {

            @Override

            public void valueChanged(TreeSelectionEvent e) {

                DefaultMutableTreeNode node=(DefaultMutableTreeNode)tree.getLastSelectedPathComponent();

                if(node.equals(node1)) {

                    p.removeAll();

                    p.add("指标设置",jp1);

                    p.add("竞标单位设置",jp2);

                    p.add("专家设置",jp3);

                }

                if(node.equals(node2)) {

                    p.removeAll();

                    p.add("指标设置",jp4);

                    p.add("竞标单位设置",jp5);

                    p.add("专家设置",jp6);

                }

            }

        });

        setTitle("工程项目招标设置");

        JSplitPane jsp=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,tree,p);

        jsp.setDividerLocation(170);

        add(jsp);

        setBounds(100,100,700,400);

        setVisible(true);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }

}

结果