201874040116-李鑫《面向对象程序设计（java）》第十四周学习总结

 

	内容
这个作业属于哪个课程	https://www.cnblogs.com/nwnu-daizh/
这个作业的要求在哪里	https://www.cnblogs.com/nwnu-daizh/p/11953993.html
作业学习目标	（1）掌握GUI布局管理器用法； （2）掌握Java Swing文本输入组件用途及常用API； （3）掌握Java Swing选择输入组件用途及常用API。

 

 第一部分：总结第十二章本周理论知识

　　设计模式： 一种以结构化的方式展示专家们的心血的方法。

　　“模型-视图-控制器”模式： Swing框架 中最具影响力的设计模式。

　　布局管理器：控制容器中组件的位置与大小

　　　　　　1）边框布局（border layout manager）：JFrame的默认管理器。

　　　　　　2） 流式布局（FlowLayout）：从第一行开始，从左向右依次排列，碰到边界时转到下一行继续。

　　　　　　3）网格布局（GridLayout）：按行排列，每个单元都相同大小。

　　

第二部分：实验部分

实验1：测试程序1

package calculator;

import java.awt.*;
import javax.swing.*;

/**
 * @version 1.35 2018-04-10
 * @author Cay Horstmann
 */
public class Calculator
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(() -> {
         CalculatorFrame frame = new CalculatorFrame();
         frame.setTitle("Calculator");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
      });
   }
}

Calculator

package calculator;

import javax.swing.*;

/**
 * A frame with a calculator panel.
 */
public class CalculatorFrame extends JFrame
{
   public CalculatorFrame()
   {
      add(new CalculatorPanel());
      pack();
   }
}

CalculatorFrame

package calculator;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * A panel with calculator buttons and a result display.
 */
public class CalculatorPanel extends JPanel
{
   private JButton display;
   private JPanel panel;
   private double result;
   private String lastCommand;
   private boolean start;

   public CalculatorPanel()
   {
      setLayout(new BorderLayout());    //构造一个边框布局管理器对象

      result = 0;
      lastCommand = "=";
      start = true;

      // add the display

      display = new JButton("0");
      display.setEnabled(false);
      add(display, BorderLayout.NORTH);

      ActionListener insert = new InsertAction();
      ActionListener command = new CommandAction();

      // add the buttons in a 4 x 4 grid

      panel = new JPanel();
      panel.setLayout(new GridLayout(4, 4));//构造一个4x4网格布局管理器对象并添加按钮

      addButton("7", insert);
      addButton("8", insert);
      addButton("9", insert);
      addButton("/", command);

      addButton("4", insert);
      addButton("5", insert);
      addButton("6", insert);
      addButton("*", command);

      addButton("1", insert);
      addButton("2", insert);
      addButton("3", insert);
      addButton("-", command);

      addButton("0", insert);
      addButton(".", insert);
      addButton("=", command);
      addButton("+", command);

      add(panel, BorderLayout.CENTER);
   }

   /**
    * Adds a button to the center panel.
    * @param label the button label
    * @param listener the button listener
    */
   private void addButton(String label, ActionListener listener)
   {
      JButton button = new JButton(label);
      button.addActionListener(listener);
      panel.add(button);
   }

   /**
    * This action inserts the button action string to the end of the display text.
    */
   private class InsertAction implements ActionListener
   {
      public void actionPerformed(ActionEvent event)
      {
         String input = event.getActionCommand();
         if (start)
         {
            display.setText("");
            start = false;
         }
         display.setText(display.getText() + input);
      }
   }

   /**
    * This action executes the command that the button action string denotes.
    */
   private class CommandAction implements ActionListener
   {
      public void actionPerformed(ActionEvent event)
      {
         String command = event.getActionCommand();

         if (start)
         {
            if (command.equals("-"))
            {
               display.setText(command);
               start = false;
            }
            else lastCommand = command;
         }
         else
         {
            calculate(Double.parseDouble(display.getText()));
            lastCommand = command;
            start = true;
         }
      }
   }

   /**
    * Carries out the pending calculation.
    * @param x the value to be accumulated with the prior result.
    */
   public void calculate(double x)
   {
      if (lastCommand.equals("+")) result += x;
      else if (lastCommand.equals("-")) result -= x;
      else if (lastCommand.equals("*")) result *= x;
      else if (lastCommand.equals("/")) result /= x;
      else if (lastCommand.equals("=")) result = x;
      display.setText("" + result);
   }
}

CalculatorPanel

测试程序2

 

package text;

import java.awt.BorderLayout;
import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingConstants;

/**
 * A frame with sample text components.
 */
public class TextComponentFrame extends JFrame
{
   public static final int TEXTAREA_ROWS = 8;
   public static final int TEXTAREA_COLUMNS = 20;

   public TextComponentFrame()
   {
      JTextField textField = new JTextField();
      JPasswordField passwordField = new JPasswordField();

      JPanel northPanel = new JPanel();
      northPanel.setLayout(new GridLayout(2, 2));    //构造一个2x2网格布局管理器对象
      northPanel.add(new JLabel("User name: ", SwingConstants.RIGHT));
      northPanel.add(textField);
      northPanel.add(new JLabel("Password: ", SwingConstants.RIGHT));
      northPanel.add(passwordField);

      add(northPanel, BorderLayout.NORTH);

      JTextArea textArea = new JTextArea(TEXTAREA_ROWS, TEXTAREA_COLUMNS);
      JScrollPane scrollPane = new JScrollPane(textArea);

      add(scrollPane, BorderLayout.CENTER);

      // add button to append text into the text area
    
      JPanel southPanel = new JPanel();

      JButton insertButton = new JButton("Insert");
      southPanel.add(insertButton);
      insertButton.addActionListener(event ->
         textArea.append("User name: " + textField.getText() + " Password: "
            + new String(passwordField.getPassword()) + "\n"));

      add(southPanel, BorderLayout.SOUTH);
      pack();
   }
}

TextComponentFrame

package text;

import java.awt.*;
import javax.swing.*;

/**
 * @version 1.42 2018-04-10
 * @author Cay Horstmann
 */
public class TextComponentTest
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(() -> {
         JFrame frame = new TextComponentFrame();
         frame.setTitle("TextComponentTest");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
      });
   }
}

TextComponentTest

测试程序3

package checkBox;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * A frame with a sample text label and check boxes for selecting font
 * attributes.
 */
public class CheckBoxFrame extends JFrame
{
   private JLabel label;
   private JCheckBox bold;
   private JCheckBox italic;
   private static final int FONTSIZE = 24;

   public CheckBoxFrame()
   {
      // add the sample text label

      label = new JLabel("The quick brown fox jumps over the lazy dog.");
      label.setFont(new Font("Serif", Font.BOLD, FONTSIZE));
      add(label, BorderLayout.CENTER);

      // this listener sets the font attribute of
      // the label to the check box state
      //查询复选框的状态并对字体格式进行调整
      ActionListener listener = event -> {
         int mode = 0;
         if (bold.isSelected()) mode += Font.BOLD;
         if (italic.isSelected()) mode += Font.ITALIC;
         label.setFont(new Font("Serif", mode, FONTSIZE));
      };

      // add the check boxes
      //添加复选框
      JPanel buttonPanel = new JPanel();

      bold = new JCheckBox("Bold");
      bold.addActionListener(listener);
      bold.setSelected(true);
      buttonPanel.add(bold);

      italic = new JCheckBox("Italic");
      italic.addActionListener(listener);
      buttonPanel.add(italic);

      add(buttonPanel, BorderLayout.SOUTH);
      pack();
   }
}

CheckBoxFrame

 

package checkBox;

import java.awt.*;
import javax.swing.*;

/**
 * @version 1.35 2018-04-10
 * @author Cay Horstmann
 */
public class CheckBoxTest
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(() -> {
         CheckBoxFrame frame = new CheckBoxFrame();
         frame.setTitle("CheckBoxTest");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
      });
   }
}

CheckBoxTest

 

 测试程序4

package radioButton;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * A frame with a sample text label and radio buttons for selecting font sizes.
 */
public class RadioButtonFrame extends JFrame
{
   private JPanel buttonPanel;
   private ButtonGroup group;
   private JLabel label;
   private static final int DEFAULT_SIZE = 36;

   public RadioButtonFrame()
   {      
      // add the sample text label

      label = new JLabel("The quick brown fox jumps over the lazy dog.");
      label.setFont(new Font("Serif", Font.PLAIN, DEFAULT_SIZE));
      add(label, BorderLayout.CENTER);

      // add the radio buttons

      buttonPanel = new JPanel();
      group = new ButtonGroup();

      addRadioButton("Small", 8);
      addRadioButton("Medium", 12);
      addRadioButton("Large", 18);
      addRadioButton("Extra large", 36);

      add(buttonPanel, BorderLayout.SOUTH);
      pack();
   }

   /**
    * Adds a radio button that sets the font size of the sample text.
    * @param name the string to appear on the button
    * @param size the font size that this button sets
    */
   public void addRadioButton(String name, int size)
   {
      boolean selected = size == DEFAULT_SIZE;
      JRadioButton button = new JRadioButton(name, selected);
      group.add(button);
      buttonPanel.add(button);

      // this listener sets the label font size
      //改变标签格式的监听器
      ActionListener listener = event -> label.setFont(new Font("Serif", Font.PLAIN, size));

      button.addActionListener(listener);
   }
}

RadioButtonFrame

package radioButton;

import java.awt.*;
import javax.swing.*;

/**
 * @version 1.35 2018-04-10
 * @author Cay Horstmann
 */
public class RadioButtonTest
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(() -> {
         JFrame frame = new RadioButtonFrame();
         frame.setTitle("RadioButtonTest");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
      });
   }
}

RadioButtonTest

 测试程序5

package border;

import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;

/**
 * A frame with radio buttons to pick a border style.
 */
public class BorderFrame extends JFrame
{
   private JPanel demoPanel;
   private JPanel buttonPanel;
   private ButtonGroup group;

   public BorderFrame()
   {
      demoPanel = new JPanel();
      buttonPanel = new JPanel();
      group = new ButtonGroup();
                                              //单选项设置
      addRadioButton("Lowered bevel", BorderFactory.createLoweredBevelBorder());
      addRadioButton("Raised bevel", BorderFactory.createRaisedBevelBorder());
      addRadioButton("Etched", BorderFactory.createEtchedBorder());
      addRadioButton("Line", BorderFactory.createLineBorder(Color.BLUE));
      addRadioButton("Matte", BorderFactory.createMatteBorder(10, 10, 10, 10, Color.BLUE));
      addRadioButton("Empty", BorderFactory.createEmptyBorder());

      Border etched = BorderFactory.createEtchedBorder();
      Border titled = BorderFactory.createTitledBorder(etched, "Border types");
      buttonPanel.setBorder(titled);

      setLayout(new GridLayout(2, 1));        //布局管理器设置
      add(buttonPanel);
      add(demoPanel);
      pack();
   }

   public void addRadioButton(String buttonName, Border b)
   {
      JRadioButton button = new JRadioButton(buttonName);
      button.addActionListener(event -> demoPanel.setBorder(b));
      group.add(button);
      buttonPanel.add(button);
   }
}

BorderFrame

package border;

import java.awt.*;
import javax.swing.*;

/**
 * @version 1.35 2018-04-10
 * @author Cay Horstmann
 */
public class BorderTest
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(() -> {
         BorderFrame frame = new BorderFrame();
         frame.setTitle("BorderTest");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
      });
   }
}

BorderTest

 

测试程序6

package comboBox;

import java.awt.BorderLayout;
import java.awt.Font;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

/**
 * A frame with a sample text label and a combo box for selecting font faces.
 */
public class ComboBoxFrame extends JFrame
{
   private JComboBox faceCombo;
   private JLabel label;
   private static final int DEFAULT_SIZE = 24;

   public ComboBoxFrame()
   {
      // add the sample text label

      label = new JLabel("The quick brown fox jumps over the lazy dog.");
      label.setFont(new Font("Serif", Font.PLAIN, DEFAULT_SIZE));
      add(label, BorderLayout.CENTER);

      // make a combo box and add face names
      //设置组合框
      faceCombo = new JComboBox<>();
      faceCombo.addItem("Serif");
      faceCombo.addItem("SansSerif");
      faceCombo.addItem("Monospaced");
      faceCombo.addItem("Dialog");
      faceCombo.addItem("DialogInput");

      // the combo box listener changes the label font to the selected face name
      //根据选择的选项改变字体格式
      faceCombo.addActionListener(event ->
         label.setFont(
            new Font(faceCombo.getItemAt(faceCombo.getSelectedIndex()), 
               Font.PLAIN, DEFAULT_SIZE)));

      // add combo box to a panel at the frame's southern border

      JPanel comboPanel = new JPanel();
      comboPanel.add(faceCombo);
      add(comboPanel, BorderLayout.SOUTH);
      pack();
   }
}

ComboBoxFrame

package comboBox;

import java.awt.*;
import javax.swing.*;

/**
 * @version 1.36 2018-04-10
 * @author Cay Horstmann
 */
public class ComboBoxTest
{
   public static void main(String[] args)
   {
      EventQueue.invokeLater(() -> {
         ComboBoxFrame frame = new ComboBoxFrame();
         frame.setTitle("ComboBoxTest");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setVisible(true);
      });
   }
}

ComboBoxTest

实验2：结对编程练习

 

1)   程序设计思路简述；

　　使用两个类。　　进行框架对象构造的 主类 InputTable 类，进行布局管理与功能实现的 继承自JFrame类的 NFrame类。

　　　　NFrame： 使用两个面板组件

2)   符合编程规范的程序代码；

　　

 1 package paratice;
 2 
 3 import java.awt.EventQueue;
 4 
 5 import javax.swing.JFrame;
 6 
 7 public class InputTable {
 8 
 9     public static void main(String[] args) {
10         
11         EventQueue.invokeLater(() -> {
12              JFrame frame = new NFrame();
13              frame.setTitle("NFrame");
14              frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
15              frame.setVisible(true);
16           });
17 
18     }
19 
20 }

InputTable

  1 package paratice;
  2 
  3 import java.awt.FlowLayout;
  4 import java.awt.GridLayout;
  5 import java.util.Enumeration;
  6 
  7 import javax.swing.AbstractButton;
  8 import javax.swing.BorderFactory;
  9 import javax.swing.ButtonGroup;
 10 import javax.swing.JButton;
 11 import javax.swing.JCheckBox;
 12 import javax.swing.JFrame;
 13 import javax.swing.JLabel;
 14 import javax.swing.JPanel;
 15 import javax.swing.JRadioButton;
 16 import javax.swing.JScrollPane;
 17 import javax.swing.JTextArea;
 18 import javax.swing.JTextField;
 19 
 20 public class NFrame extends JFrame{
 21     
 22     public static final int TEXTAREA_ROWS = 6;
 23     public static final int TEXTAREA_COLUMNS = 50;
 24     
 25     String cbString = " 喜好：";
 26     
 27     NButtonGroup rbGroup = new NButtonGroup();
 28     JPanel Npanel = new JPanel();
 29     JPanel Spanel = new JPanel();
 30     JPanel rbpanel = new JPanel();
 31     JPanel cbpanel = new JPanel();
 32     JPanel rcbpanel = new JPanel();
 33     JPanel irbPanel = new JPanel();
 34         
 35     public NFrame(){    
 36         
 37         setLayout(new GridLayout(4,1,0,20));
 38         setBounds(400, 300, 100, 100);;
 39         
 40         rbpanel.setBorder(BorderFactory.createTitledBorder("性别"));
 41         cbpanel.setBorder(BorderFactory.createTitledBorder("爱好"));
 42         
 43         //姓名，地址输入框
 44         JTextField textName = new JTextField(8);
 45         JTextField textAddres = new JTextField(12);
 46         
 47         //性别单选
 48         addRadioButton("男");
 49         addRadioButton("女");
 50         
 51         //喜好多选
 52         addJCheckBox("阅读");
 53         addJCheckBox("唱歌");
 54         addJCheckBox("跳舞");
 55         
 56         //录入信息显示区
 57         JTextArea textArea = new JTextArea(TEXTAREA_ROWS, TEXTAREA_COLUMNS);
 58         textArea.setEditable(false);
 59         JScrollPane scrollPane = new JScrollPane(textArea);
 60         
 61         //提交和重置
 62         JButton insertButton = new JButton("提交");
 63               
 64           insertButton.addActionListener(event ->{
 65               if(!(textName.getText().equalsIgnoreCase("")||textAddres.getText().equalsIgnoreCase("")||rbGroup.toString().equalsIgnoreCase("")))
 66               {
 67                   textArea.append("姓名: "  + textName.getText() + " 地址: " + textAddres.getText() + rbGroup.toString() + cbString +"\n");}
 68               else {
 69                 
 70             }});
 71               
 72           JButton cleverButton = new JButton("重置");
 73           cleverButton.addActionListener(event ->{
 74               textArea.setText("录入信息显示区！\n");
 75               textName.setText("");
 76               textAddres.setText("");
 77               rbGroup.clearSelection();
 78           });
 79           textArea.append("录入信息显示区！\n");
 80 
 81         //布局设置
 82         Npanel.setLayout(new FlowLayout(FlowLayout.CENTER,0,0));
 83         Npanel.add(new JLabel("姓名: "));
 84         Npanel.add(textName);
 85         Npanel.add(new JLabel("地址: "));
 86         Npanel.add(textAddres);
 87         
 88         add(Npanel);
 89         
 90         rcbpanel.add(rbpanel);
 91         rcbpanel.add(cbpanel);
 92         
 93         add(rcbpanel);
 94         
 95         irbPanel.add(insertButton);
 96         irbPanel.add(cleverButton);
 97         add(irbPanel);
 98         
 99         add(scrollPane);
100 
101         pack();        
102     }
103 
104     private void addRadioButton(String ButtonName) {
105         JRadioButton button = new JRadioButton(ButtonName);
106         rbGroup.add(button);
107         rbpanel.add(button);
108     }
109     
110     private void addJCheckBox(String ButtonName) {
111         JCheckBox button = new JCheckBox(ButtonName);
112         button.addActionListener(event->{
113             if(button.isSelected()) {
114                 cbString += " "+button.getText();
115             }
116             else {
117                 cbString = cbString.replaceAll(" "+button.getText(),"");
118             }
119         });
120         cbpanel.add(button);
121     }
122     
123     private static class  NButtonGroup extends ButtonGroup{
124         
125         public String toString() {
126             String model = "";
127             //获取被选中的项的Text
128             Enumeration modelBtns = getElements();  
129                 while (modelBtns.hasMoreElements()) {  
130                     AbstractButton modelbtn = modelBtns.nextElement();  
131                         if(modelbtn.isSelected())  {
132                             model+="  性别："+modelbtn.getText()+" ";
133                             return model;
134                 }            
135             }
136                 return model;
137         }
138     }
139 }

NFrame

 

3)   程序运行功能界面截图；