西北農林科技大學_實驗8 Swing

1、信息工程學院Java語言課內實習報告 （20132014學年第 二學期）實習題目：_實驗四 姓 名：_夏偉華_ _ 學 號：_2012013279_ _ 專 業(yè)：_計算機科學技術_年級班級：_12級2班_實驗8 大家終于等到使用Java做圖形界面啦，好Happy！今天我們就將一起了解圖形用戶界面基本組件的使用，布局管理器如何對組件進行管理以及事件處理機制的應用。任務一：小小界面設計請設計一個界面，包括：菜單，文本框，按鈕，標簽，文本區(qū)，選擇框，單選按鈕和下拉列表。import java.awt.EventQueue;public class Ex8 private JFrame frmEcli

2、psev;private JTextField txtImportJava;/* * Launch the application. */public static void main(String args) EventQueue.invokeLater(new Runnable() public void run() try Ex8 window = new Ex8();window.frmEclipsev.setVisible(true); catch (Exception e) e.printStackTrace(););/* * Create the application. */p

3、ublic Ex8() initialize();/* * Initialize the contents of the frame. */private void initialize() frmEclipsev = new JFrame();frmEclipsev.setTitle("Eclipseu6C49u5316u7248V 1.0");frmEclipsev.setBounds(100, 100, 450, 300);frmEclipsev.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frmEclipsev.ge

4、tContentPane().setLayout(null);txtImportJava = new JTextField();txtImportJava.setText("System.out.println("Hello u7A0Bu5E8Fu733F");");txtImportJava.setBounds(112, 79, 306, 43);frmEclipsev.getContentPane().add(txtImportJava);txtImportJava.setColumns(10);JButton btnDebug = new JBut

5、ton("Debug");btnDebug.setBounds(188, 135, 113, 27);frmEclipsev.getContentPane().add(btnDebug);JLabel label = new JLabel("u6211u662Fu6807u7B7EuFF0Cu663Eu793Au4FE1u606F");label.setBounds(265, 13, 153, 34);frmEclipsev.getContentPane().add(label);JTextArea textArea = new JTextArea();

6、textArea.setText("u6587u672Cu533A");textArea.setBounds(149, 19, 88, 34);frmEclipsev.getContentPane().add(textArea);JCheckBox checkBox = new JCheckBox("u9009u62E9u6846");checkBox.setBounds(10, 17, 133, 27);frmEclipsev.getContentPane().add(checkBox);JRadioButton radioButton = new J

7、RadioButton("u5355u9009u6309u94AE");radioButton.setBounds(30, 171, 157, 27);frmEclipsev.getContentPane().add(radioButton);JRadioButton rdbtnNewRadioButton = new JRadioButton("u5355u9009u6309u94AE");rdbtnNewRadioButton.setBounds(224, 177, 157, 27);frmEclipsev.getContentPane().add(

8、rdbtnNewRadioButton);JComboBox comboBox = new JComboBox();comboBox.setBounds(20, 53, 69, 24);frmEclipsev.getContentPane().add(comboBox);comboBox.addItem("Socket");comboBox.addItem("MVC");comboBox.addItem("Web");JCheckBox chckbxNewCheckBox = new JCheckBox("u9009u62E

9、9u6846");chckbxNewCheckBox.setBounds(10, 131, 133, 27);frmEclipsev.getContentPane().add(chckbxNewCheckBox);JMenuBar menuBar = new JMenuBar();frmEclipsev.setJMenuBar(menuBar);JMenu menu = new JMenu("u83DCu5355");menuBar.add(menu);JMenuItem mntmjavaj = new JMenuItem("u65B0u5EFAJAVA

10、u5DE5u7A0B");menu.add(mntmjavaj);JMenuItem menuItem_1 = new JMenuItem("u6253u5F00u6587u4EF6");menu.add(menuItem_1);JMenuItem menuItem_2 = new JMenuItem("u5173u95ED");menu.add(menuItem_2);JMenu menu_6 = new JMenu("u65B0u5EFAu5DE5u7A0B");menu.add(menu_6);JMenu mnXml

11、= new JMenu("XMLu5DE5u7A0B");menu_6.add(mnXml);JMenu menu_1 = new JMenu("u7F16u8F91");menuBar.add(menu_1);JMenu menu_2 = new JMenu("u67E5u627E");menuBar.add(menu_2);JMenu menu_3 = new JMenu("u8FD0u884C");menuBar.add(menu_3);JMenu menu_4 = new JMenu("u7A97

12、u53E3");menuBar.add(menu_4);JMenu menu_5 = new JMenu("u5E2Eu52A9");menuBar.add(menu_5);任務二: 計算器（1）必做內容：編寫一個計算器的程序，主界面由多個按鈕組建、文本框組建構成。運行結果如圖所示：（2）選做內容：同時，使用相應的事件對這個組件進行監(jiān)聽工作，達到計算的功能。import java.awt.EventQueue;import javax.swing.JFrame;import javax.swing.JButton;import javax.swing.JTextF

13、ield;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;public class Gui private JFrame frame;private JTextField textField;/* * Launch the application. */public static void main(String args) EventQueue.invokeLater(new Runnable() public void run() try Gui window = new Gui();window

14、.frame.setVisible(true); catch (Exception e) e.printStackTrace(););/* * Create the application. */public Gui() initialize();/* * Initialize the contents of the frame. */private void initialize() frame = new JFrame();frame.setTitle("u7B80u6613u8BA1u7B97u5668");frame.setBounds(100, 100, 450,

15、 300);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.getContentPane().setLayout(null);JButton btnNewButton = new JButton("9");btnNewButton.setBounds(14, 78, 62, 27);frame.getContentPane().add(btnNewButton);textField = new JTextField();textField.setBounds(14, 13, 393, 24);frame.

16、getContentPane().add(textField);textField.setColumns(10);JButton button = new JButton("6");button.setBounds(14, 118, 62, 27);frame.getContentPane().add(button);JButton button_1 = new JButton("3");button_1.setBounds(14, 158, 62, 27);frame.getContentPane().add(button_1);JButton but

17、ton_2 = new JButton("0");button_2.setBounds(14, 198, 62, 27);frame.getContentPane().add(button_2);JButton button_3 = new JButton("8");button_3.setBounds(90, 78, 62, 27);frame.getContentPane().add(button_3);JButton button_4 = new JButton("5");button_4.setBounds(90, 118,

18、62, 27);frame.getContentPane().add(button_4);JButton button_5 = new JButton("2");button_5.setBounds(90, 158, 62, 27);frame.getContentPane().add(button_5);JButton button_6 = new JButton("+/-");button_6.setBounds(90, 198, 62, 27);frame.getContentPane().add(button_6);JButton button_

19、7 = new JButton("7");button_7.setBounds(166, 78, 62, 27);frame.getContentPane().add(button_7);JButton button_8 = new JButton("4");button_8.setBounds(166, 118, 62, 27);frame.getContentPane().add(button_8);JButton button_9 = new JButton("1");button_9.setBounds(166, 158, 6

20、2, 27);frame.getContentPane().add(button_9);JButton button_10 = new JButton(".");button_10.setBounds(166, 198, 62, 27);frame.getContentPane().add(button_10);JButton button_11 = new JButton("/");button_11.setBounds(261, 78, 72, 27);frame.getContentPane().add(button_11);JButton but

21、ton_12 = new JButton("*");button_12.setBounds(261, 118, 72, 27);frame.getContentPane().add(button_12);JButton button_13 = new JButton("-");button_13.setBounds(261, 158, 72, 27);frame.getContentPane().add(button_13);JButton button_14 = new JButton("+");button_14.setBound

22、s(261, 198, 72, 27);frame.getContentPane().add(button_14);JButton btnSqrt = new JButton("Sqrt");btnSqrt.setBounds(347, 78, 72, 27);frame.getContentPane().add(btnSqrt);JButton button_16 = new JButton("%");button_16.setBounds(346, 118, 72, 27);frame.getContentPane().add(button_16);

23、JButton btnx = new JButton("1/X");btnx.setBounds(347, 158, 72, 27);frame.getContentPane().add(btnx);JButton button_18 = new JButton("=");button_18.setBounds(346, 198, 72, 27);frame.getContentPane().add(button_18);JButton btnBack = new JButton("Back");btnBack.setBounds(1

24、4, 38, 98, 27);frame.getContentPane().add(btnBack);JButton btnEc = new JButton("CE");btnEc.addActionListener(new ActionListener() public void actionPerformed(ActionEvent arg0) );btnEc.setBounds(126, 38, 88, 27);frame.getContentPane().add(btnEc);JButton btnC = new JButton("C");btn

25、C.setBounds(247, 38, 72, 27);frame.getContentPane().add(btnC);JButton btnAbout = new JButton("ABOUT");btnAbout.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) );btnAbout.setBounds(335, 38, 72, 27);frame.getContentPane().add(btnAbout);任務三:算數(shù)測試編寫一個算術測試小軟件，用來

26、訓練小學生的算術能力。程序由3個類組成，其中Teacher類對象負責給出算術題目，并判斷回答者的答案是否正確：ComputerFrame類對象提供的GUI界面看到題目并通過該GUI界面給出題目的答案；MailClass是主類。l 請童鞋們去作業(yè)管理系統(tǒng)下載QuestionAndAnswer.zip。Teacher.java和MailClassss.java已給出，請按照程序要求，將ComputerFrame.java中的【代碼】替換為程序代碼。textOnetextTwogetProblemgiveAnswermessageoperatorLabel giveAnswertextResultl

27、 運行結果如圖所示。圖中標出了各個組件的變量名稱。l 點擊“獲取題目”后，顯示題目：l 點擊“確認答案”后，如果輸入答案錯誤，顯示：“你回答錯誤”，如果答案正確，顯示“你回答正確”，如果輸入的不是數(shù)字，顯示“請輸入數(shù)字字符”。MainClass.javapublic class MainClass public static void main (String args) ComputerFrame frame; frame=new ComputerFrame(); frame.setTitle("算數(shù)測試"); frame.setBounds(100,100,650,18

28、0); ComputerFrame.javaimport java.awt.*;import java.awt.event.*;import javax.swing.*;public class ComputerFrame extends JFrame JMenuBar menubar;JMenu choiceGrade;JMenuItem grade1,grade2,grade3; JButton getProblem,giveAnwser; JLabel operatorLabel,message; JTextField textOne,textTwo,textResult; Teache

29、r teacherzhang; ComputerFrame() teacherzhang=new Teacher(); teacherzhang.setMaxInteger(20); setLayout(new FlowLayout(); menubar=new JMenuBar(); choiceGrade=new JMenu("選擇級別"); grade1=new JMenuItem("幼兒級別"); grade2=new JMenuItem("兒童級別"); grade3=new JMenuItem("小學生級別&qu

30、ot;); grade1.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) teacherzhang.setMaxInteger(10); ); grade2.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) teacherzhang.setMaxInteger(50); ); grade3.addActionListener(new ActionListener()

31、public void actionPerformed(ActionEvent e) teacherzhang.setMaxInteger(100); ); choiceGrade.add(grade1); choiceGrade.add(grade2); choiceGrade.add(grade3); menubar.add(choiceGrade); setJMenuBar(menubar); textOne=new JTextField(5); textTwo=new JTextField(5); textResult=new JTextField(5); operatorLabel=

32、 new JLabel("+"); operatorLabel.setFont(new Font("Arial",Font.BOLD,20); message=new JLabel("你還沒有回答呢"); getProblem=new JButton("獲取題目"); giveAnwser=new JButton("確認答案"); add(getProblem); add(textOne); add(operatorLabel); add(textTwo); add(new JLabel(&qu

33、ot;="); add(textResult); add(giveAnwser); add(message); textResult.requestFocus(); textOne.setEditable(false); textTwo.setEditable(false); getProblem.setActionCommand("getProblem"); textResult.setActionCommand("answer"); giveAnwser.setActionCommand("answer"); teach

34、erzhang.setJTextField(textOne, textTwo, textResult); teacherzhang.setJLabel(operatorLabel,message); getProblem.addActionListener(teacherzhang); textResult.addActionListener(teacherzhang); giveAnwser.addActionListener(teacherzhang); setVisible(true); validate(); setDefaultCloseOperation(DISPOSE_ON_CL

35、OSE); Teacher.javaimport java.util.*;import java.awt.event.*;import javax.swing.*;public class Teacher implements ActionListener int numberOne ,numberTwo;String operator=""boolean isRight;Random random;int maxInteger;JTextField textOne,textTwo,textResult;JLabel operatorLabel,message;Teache

36、r()random =new Random();public void setMaxInteger(int n) maxInteger=n;public void actionPerformed(ActionEvent e)String str=e.getActionCommand();if(str.equals("getProblem")numberOne=random.nextInt(maxInteger)+1;numberTwo=random.nextInt(maxInteger)+1;double d=Math.random();if(d<0.4) opera

37、tor="+"else if(d>0.6)operator="*"elseoperator="-"textOne.setText(""+numberOne);textTwo.setText(""+numberTwo);operatorLabel.setText(operator);message.setText("請回答");textResult.setText(null);else if(str.equals("answer")String answer=textResult.getText();tryint result=Integer.parseInt(answer);if (operator.equals("+")if(result=numberOne+numberTwo)message.setText("你回答正確");elsemessage.setText("你回答錯誤");else if(operator.equals("-")i