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);
      });
   }
}

package calculator;

import javax.swing.*;

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

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);
   }
}

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();
   }
}

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);
      });
   }
}

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();
   }
}

 

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);
      });
   }
}

 

 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);
   }
}

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);
      });
   }
}

 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);
   }
}

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);
      });
   }
}

 

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<String> 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();
   }
}

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);
      });
   }
}

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；

　　

package paratice;

import java.awt.EventQueue;

import javax.swing.JFrame;

public class InputTable {

    public static void main(String[] args) {
        
        EventQueue.invokeLater(() -> {
             JFrame frame = new NFrame();
             frame.setTitle("NFrame");
             frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
             frame.setVisible(true);
          });

    }

}

package paratice;

import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.util.Enumeration;

import javax.swing.AbstractButton;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class NFrame extends JFrame{
    
    public static final int TEXTAREA_ROWS = 6;
    public static final int TEXTAREA_COLUMNS = 50;
    
    String cbString = " 喜好：";
    
    NButtonGroup rbGroup = new NButtonGroup();
    JPanel Npanel = new JPanel();
    JPanel Spanel = new JPanel();
    JPanel rbpanel = new JPanel();
    JPanel cbpanel = new JPanel();
    JPanel rcbpanel = new JPanel();
    JPanel irbPanel = new JPanel();
        
    public NFrame(){    
        
        setLayout(new GridLayout(4,1,0,20));
        setBounds(400, 300, 100, 100);;
        
        rbpanel.setBorder(BorderFactory.createTitledBorder("性别"));
        cbpanel.setBorder(BorderFactory.createTitledBorder("爱好"));
        
        //姓名，地址输入框
        JTextField textName = new JTextField(8);
        JTextField textAddres = new JTextField(12);
        
        //性别单选
        addRadioButton("男");
        addRadioButton("女");
        
        //喜好多选
        addJCheckBox("阅读");
        addJCheckBox("唱歌");
        addJCheckBox("跳舞");
        
        //录入信息显示区
        JTextArea textArea = new JTextArea(TEXTAREA_ROWS, TEXTAREA_COLUMNS);
        textArea.setEditable(false);
        JScrollPane scrollPane = new JScrollPane(textArea);
        
        //提交和重置
        JButton insertButton = new JButton("提交");
              
          insertButton.addActionListener(event ->{
              if(!(textName.getText().equalsIgnoreCase("")||textAddres.getText().equalsIgnoreCase("")||rbGroup.toString().equalsIgnoreCase("")))
              {
                  textArea.append("姓名: "  + textName.getText() + " 地址: " + textAddres.getText() + rbGroup.toString() + cbString +"\n");}
              else {
                
            }});
              
          JButton cleverButton = new JButton("重置");
          cleverButton.addActionListener(event ->{
              textArea.setText("录入信息显示区！\n");
              textName.setText("");
              textAddres.setText("");
              rbGroup.clearSelection();
          });
          textArea.append("录入信息显示区！\n");

        //布局设置
        Npanel.setLayout(new FlowLayout(FlowLayout.CENTER,0,0));
        Npanel.add(new JLabel("姓名: "));
        Npanel.add(textName);
        Npanel.add(new JLabel("地址: "));
        Npanel.add(textAddres);
        
        add(Npanel);
        
        rcbpanel.add(rbpanel);
        rcbpanel.add(cbpanel);
        
        add(rcbpanel);
        
        irbPanel.add(insertButton);
        irbPanel.add(cleverButton);
        add(irbPanel);
        
        add(scrollPane);

        pack();        
    }

    private void addRadioButton(String ButtonName) {
        JRadioButton button = new JRadioButton(ButtonName);
        rbGroup.add(button);
        rbpanel.add(button);
    }
    
    private void addJCheckBox(String ButtonName) {
        JCheckBox button = new JCheckBox(ButtonName);
        button.addActionListener(event->{
            if(button.isSelected()) {
                cbString += " "+button.getText();
            }
            else {
                cbString = cbString.replaceAll(" "+button.getText(),"");
            }
        });
        cbpanel.add(button);
    }
    
    private static class  NButtonGroup extends ButtonGroup{
        
        public String toString() {
            String model = "";
            //获取被选中的项的Text
            Enumeration<AbstractButton> modelBtns = getElements();  
                while (modelBtns.hasMoreElements()) {  
                    AbstractButton modelbtn = modelBtns.nextElement();  
                        if(modelbtn.isSelected())  {
                            model+="  性别："+modelbtn.getText()+" ";
                            return model;
                }            
            }
                return model;
        }
    }
}

 

3)   程序运行功能界面截图；