Java实验指导书.doc

JAVA编程技术实验指导书14学时指导教师：张智实验1 Java基础编程（4学时）实验目的1. 掌握设置、编写与运行Java程序的方法。2. 掌握Java基本数据类型、运算符与表达式、数组的使用方法。3. 掌握Java程序顺序结构、选择结构、循环结构的程序设计方法。实验任务1. 用循环语句编写一个程序，算出1000之内的全部素数。2. 写出符合如下要求的程序，并运行。（1）声明两个长度为10的double类型的数组A、B，并赋值。（2）用这两个数组中的元素做加法运算，然后将结果保存在数组C之中。（3）分别将这三个数组中的元素输出。3. 使用递归方法输出杨辉三角，数据要存放在二维数组中，要求输出10行。实验代码：1. 用循环语句编写一个程序，算出1000之内的全部素数。package shiyan1;public class sushu public static boolean isPrime(int num) for(int i = 2; i = Math.sqrt(num); i+) if(num % i = 0) return false; return true; public static void main(String args)int i=0;for(int j = 2; j = 1000; j+)if(sushu.isPrime(j) System.out.print(j + ); i+;if(i=10)System.out.println();i=0; 实验截图：2. 写出符合如下要求的程序，并运行。（1）声明两个长度为10的double类型的数组A、B，并赋值。（2）用这两个数组中的元素做加法运算，然后将结果保存在数组C之中。（3）分别将这三个数组中的元素输出。实验代码：package shiyan1;import java.util.Arrays;public class shuzuxiangjia public static void main(String args) / TODO Auto-generated method stubdoublea= new double1,2,3,4,5,6,7,8,9,10;doubleb= new double1,2,3,4,5,6,7,8,9,10;doublec= new double10;for(int i=0;ia.length;i+)ci=ai+bi;System.out.print(Arrays.toString(a);System.out.println();System.out.print(Arrays.toString(b);System.out.println();System.out.print(Arrays.toString(c);System.out.println();实验截图：3. 使用递归方法输出杨辉三角，数据要存放在二维数组中，要求输出10行。实验代码：package shiyan1;public class yanghuisanjiao public static int yang(int i,int j)if(i=j|j=0)return 1;return yang(i-1,j-1)+yang(i-1,j);public static void main(String args) / TODO Auto-generated method stubint n=10;int mat=new int10;for(int i=0;in;i+)mati=new inti+1;for(int i=0;imat.length;i+)for(int j=0;jmati.length;j+)matij=yang(i,j);for(int i=0;imat.length;i+)for(int j=0;jmati.length;j+)System.out.print(String.format(%4d,matij);System.out.println();实验截图:实验2 Java面向对象编程（2学时）实验目的1. 掌握创建类和对象的方法。2. 掌握构造方法的执行过程。3. 掌握Java继承、多态和接口的编程方法。实验任务1. 创建Rodent(啮齿动物)抽象类，其子类有Mouse（老鼠）、Mole（鼹鼠）、Hamster（大颊鼠）。在父类中，提供对所有的Rodent通用的方法。在子类中，根据该子类特定的行为习性来覆盖这些方法。例如老鼠属杂食（omnivorous），鼹鼠主食昆虫（insect），大颊鼠主食植物种子（plant seed）。创建一个Rodent数组，填充不同的数据类型，然后调用测试相关方法。2. 修改上述第1题中的Rodent类，使其成为一个接口。在接口中声明方法eatWhichFood。定义各种啮齿动物类，并实现这个接口。创建各种啮齿动物类的对象，观察程序的输出。实验代码：1. 创建Rodent(啮齿动物)抽象类，其子类有Mouse（老鼠）、Mole（鼹鼠）、Hamster（大颊鼠）。在父类中，提供对所有的Rodent通用的方法。在子类中，根据该子类特定的行为习性来覆盖这些方法。例如老鼠属杂食（omnivorous），鼹鼠主食昆虫（insect），大颊鼠主食植物种子（plant seed）。创建一个Rodent数组，填充不同的数据类型，然后调用测试相关方法。package shiyan2;public abstract class Rodent private String RodentName;Rodent(String s)RodentName =s;public abstract String getInformation();public String getName()return RodentName;class Mouse extends Rodent private String food;public Mouse(String F,String s)super(s);food=F;public String getInformation()return Mouse类型的+getName()+的食物是+food;class Mole extends Rodentprivate String food;public Mole(String F,String s)super(s);food=F;public String getInformation()return Mole类型的+getName()+的食物是+food; class Hamster extends Rodentprivate String food;public Hamster(String F,String s)super(s);food=F;public String getInformation()return Hamster类型的+ getName()+的食物是+food;package shiyan2;public class testRodent public static void main(String args) Rodentrodent=new Rodent3;rodent0=new Mouse (omnivorous,xiaozhang);rodent1=new Mole(insect,xiaozhi);rodent2=new Hamster (plant seed,xiaochen);for(Rodent e:rodent)System.out.println(e.getInformation();实验截图：2. 修改上述第1题中的Rodent类，使其成为一个接口。在接口中声明方法eatWhichFood。定义各种啮齿动物类，并实现这个接口。创建各种啮齿动物类的对象，观察程序的输出。实验代码：package shiyan2_2;interface Rodent String eatWhichFood(); class Mouse implements Rodentprivate String name;private String food;public Mouse(String aname,String afood)=aname;this.food=afood;public String eatWhichFood()returnMouse类型的+ name+s food is+food; class Mole implements Rodentprivate String name;private String food;public Mole(String aname,String afood)=aname;this.food=afood;public String eatWhichFood()returnMole类型的+ name+s food is+food; class Hamster implements Rodentprivate String name;private String food;public Hamster(String aname,String afood)=aname;this.food=afood;public String eatWhichFood()return Hamster类型的+name+s food is+food;package shiyan2_2;import shiyan2_2.Rodent;public class testRodent public static void main(String args) Rodent rodent=new Rodent3;rodent0=new Mouse(xiaoxu,omnivorous);rodent1=new Mole(xiaozhi,insect);rodent2=new Hamster(xiaowei,plant seed); /* Rodent a=new Mouse(xiaoxu,omnivorous); Rodent b=new Mole(xiaozhi,insect); Rodent c=new Hamster(xiaowei,plant seed);或者这一种也行*/ for(Rodent e:rodent) System.out.println(e.eatWhichFood(); 实验截图：实验3 Java Swing编程（4学时）实验目的1. 掌握Java Swing常用组件的编程方法。2. 理解Java事件。实验任务1. 设计一个JFrame窗口，输入学生的基本信息，包括学号、姓名、学院、专业（下拉列表）、班级、籍贯（级联）、性别（单选按钮）、爱好（多选）、备注等，在界面中包括提交和重填按钮。提交后弹出窗口显示学生信息。要求尽量使用不同的Swing组件。2. 实现一个计算器，界面包括10个数字按钮（0至9）和四个运算符（加减乘除）按钮，以及等号和清空两个辅助按钮，还有一个用于显示输入输出的文本框。设计一个JFrame窗口，输入学生的基本信息，包括学号、姓名、学院、专业（下拉列表）、班级、籍贯（级联）、性别（单选按钮）、爱好（多选）、备注等，在界面中包括提交和重填按钮。提交后弹出窗口显示学生信息。要求尽量使用不同的Swing组件。实验代码：package shiyan3_1;import java.awt.BorderLayout;import java.awt.EventQueue;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.border.EmptyBorder;import javax.swing.ButtonGroup;import javax.swing.GroupLayout;import javax.swing.GroupLayout.Alignment;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.LayoutStyle.ComponentPlacement;import javax.swing.JTextField;import javax.swing.SwingConstants;import java.awt.Font;import javax.swing.JComboBox;import javax.swing.DefaultComboBoxModel;import javax.swing.JRadioButton;import java.awt.event.ItemListener;import java.awt.event.ItemEvent;import javax.swing.JCheckBox;import javax.swing.JButton;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;public class JFrameDemo_01 extends JFrame private JPanel cP1;private JTextField TF1;private JTextField TF2;private JTextField TF3;String s1=;String s2=;String s3=;String s4=;String s5=;String s6=;String s7=;/* * Launch the application. */public static void main(String args) EventQueue.invokeLater(new Runnable() public void run() try JFrameDemo_01 frame = new JFrameDemo_01();frame.setVisible(true); catch (Exception e) e.printStackTrace(););/* * Create the frame. */public JFrameDemo_01() setTitle(u5B66u751Fu7BA1u7406u7CFBu7EDFrn);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 676, 485);cP1 = new JPanel();cP1.setBorder(new EmptyBorder(5, 5, 5, 5);setContentPane(cP1);JLabel LB1 = new JLabel(u5B66u53F7);LB1.setFont(new Font(宋体, Font.PLAIN, 18);JLabel LB2 = new JLabel(u59D3u540D);LB2.setFont(new Font(宋体, Font.PLAIN, 18);TF1 = new JTextField();TF1.setHorizontalAlignment(SwingConstants.LEFT);TF1.setColumns(10);TF2 = new JTextField();TF2.setHorizontalAlignment(SwingConstants.LEFT);TF2.setColumns(10);JLabel LB3 = new JLabel(u5B66u9662rn);LB3.setFont(new Font(宋体, Font.PLAIN, 18);JLabel LB4 = new JLabel(u4E13u4E1A);LB4.setFont(new Font(宋体, Font.PLAIN, 18);JLabel LB5 = new JLabel(u73EDu7EA7rn);LB5.setFont(new Font(宋体, Font.PLAIN, 18);JComboBox cbB1 = new JComboBox();cbB1.setModel(new DefaultComboBoxModel(new String u8BF7u4E0Bu62C9u5217u8868u9009u62E9u5B66u9662, u8BA1u7B97u673Au5B66u9662, u6750u51B6u5B66u9662, u57CEu5EFAu5B66u9662, u5916u56FDu8BEDu5B66u9662, u4FE1u606Fu5B66u9662, u8D44u73AFu5B66u9662, u7BA1u7406u5B66u9662, u7406u5B66u9662, u533Bu5B66u9662);JComboBox cbB2 = new JComboBox();cbB2.setModel(new DefaultComboBoxModel(new String u8BF7u4E0Bu62C9u5217u8868u9009u62E9u4E13u4E1A, u4FE1u606Fu5B89u5168, u8F6Fu4EF6u5DE5u7A0B, u7F51u7EDCu5DE5u7A0B, u8BA1u7B97u673Au79D1u5B66u4E0Eu6280u672F);JComboBox cbB3 = new JComboBox();cbB3.setModel(new DefaultComboBoxModel(new String u8BF7u4E0Bu62C9u5217u8868u9009u62E9u73EDu7EA7, XA1301, XA1302, R1, R2, W1, W2, W3, DB1, DB2, J1, J2, J3, J4, J5, DZ1, DZ2, DZ3);JLabel LB6 = new JLabel(u6027u522Brn);LB6.setFont(new Font(宋体, Font.PLAIN, 18);JRadioButton rB1 = new JRadioButton(u7537rn);rB1.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) if(rB1.isSelected()s1=rB1.getText();elses1+=;);rB1.setFont(new Font(宋体, Font.PLAIN, 12);JRadioButton rB2 = new JRadioButton(u5973);rB2.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) if(rB2.isSelected()s2=rB2.getText();elses2=;);rB2.setFont(new Font(宋体, Font.PLAIN, 12);ButtonGroup btn1=new ButtonGroup();btn1.add(rB1);btn1.add(rB2);JLabel JB7 = new JLabel(u7C4Du8D2F);JB7.setFont(new Font(宋体, Font.PLAIN, 18);final JComboBox comboBox_2 = new JComboBox();comboBox_2.setFont(new Font(宋体, Font.PLAIN, 12);final JComboBox comboBox_1 = new JComboBox();comboBox_1.addItemListener(new ItemListener() public void itemStateChanged(ItemEvent e) int index=comboBox_1.getSelectedIndex();switch(index)case 0:comboBox_2.removeAllItems();comboBox_2.addItem(请选择您所在的城市);break;case 1:comboBox_2.removeAllItems();comboBox_2.removeAllItems();comboBox_2.addItem(武汉);comboBox_2.addItem(黄石);comboBox_2.addItem(黄冈);comboBox_2.addItem(咸宁);comboBox_2.addItem(天门);comboBox_2.addItem(鄂州);comboBox_2.addItem(襄樊);comboBox_2.addItem(荆州);break;case 2:comboBox_2.removeAllItems();comboBox_2.addItem(长沙);comboBox_2.addItem(岳阳);comboBox_2.addItem(衡阳);comboBox_2.addItem(永州);comboBox_2.addItem(郴州);comboBox_2.addItem(邵阳);comboBox_2.addItem(娄底);comboBox_2.addItem(常德);comboBox_2.addItem(湘潭);break;case 3:comboBox_2.removeAllItems();comboBox_2.addItem(南昌);comboBox_2.addItem(上饶);comboBox_2.addItem(景德镇);comboBox_2.addItem(九江);comboBox_2.addItem(新余);break;case 4:comboBox_2.removeAllItems();comboBox_2.addItem(杭州);comboBox_2.addItem(宁波);comboBox_2.addItem(温州);comboBox_2.addItem(绍兴);comboBox_2.addItem(湖州);comboBox_2.addItem(金华);break;case 5:comboBox_2.removeAllItems();comboBox_2.addItem(济南);comboBox_2.addItem(青岛);comboBox_2.addItem(淄博);comboBox_2.addItem(烟台);comboBox_2.addItem(威海);comboBox_2.addItem(枣庄);comboBox_2.addItem(潍坊);comboBox_2.addItem(济宁);break;case 6:comboBox_2.removeAllItems();comboBox_2.addItem(广州);comboBox_2.addItem(深圳);comboBox_2.addItem(佛山);comboBox_2.addItem(东莞);comboBox_2.addItem(中山);comboBox_2.addItem(珠海);comboBox_2.addItem(汕头);comboBox_2.addItem(潮州);break;case 7:comboBox_2.removeAllItems();comboBox_2.addItem(南京);comboBox_2.addItem(徐州);comboBox_2.addItem(无锡);comboBox_2.addItem(常州);comboBox_2.addItem(苏州);comboBox_2.addItem(南通);comboBox_2.addItem(连云港);comboBox_2.addItem(镇江);break;);comboBox_1.setModel(new DefaultComboBoxModel(new String u8BF7u4E0Bu62C9u5217u8868u9009u62E9u7701u4EFD, u6E56u5317, u6E56u5357, u6C5Fu897F, u6D59u6C5F, u5C71u4E1C, u5E7Fu4E1C, u6C5Fu82CF);comboBox_1.setFont(new Font(宋体, Font.PLAIN, 12);JLabel LB8 = new JLabel(u7701rn);LB8.setFont(new Font(宋体, Font.PLAIN, 18);JLabel LB9 = new JLabel(u7231u597Drn);LB9.setFont(new Font(宋体, Font.PLAIN, 18);JCheckBox CB1 = new JCheckBox(u8DB3u7403rn);CB1.setFont(new Font(宋体, Font.PLAIN, 12);CB1.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) if(CB1.isSelected()s3=CB1.getText();elses3=;);JCheckBox CB2 = new JCheckBox(u7FBDu6BDBu7403);CB2.setFont(new Font(宋体, Font.PLAIN, 12);CB2.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) if(CB2.isSelected()s4=CB2.getText();elses4=;);JCheckBox CB3 = new JCheckBox(u7BEEu7403);CB3.setFont(new Font(宋体, Font.PLAIN, 12);CB3.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) if(CB3.isSelected()s5=CB3.getText();elses5=;);JCheckBox CB4 = new JCheckBox(u7F51u7403);CB4.setFont(new Font(宋体, Font.PLAIN, 12);CB4.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) if(CB4.isSelected()s6=CB4.getText();elses6=;);JCheckBox CB5 = new JCheckBox(u5531u6B4C);CB5.setFont(new Font(宋体, Font.PLAIN, 12);CB5.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) if(CB5.isSelected()s7=CB5.getText();elses7=;);/*grouplayout 支持两种组串行组SequentialGroup()按顺序一个接一个的放置其子元素 并行组ParallelGroup()能够以四种方式对齐其子元素 * setHorizontalGroup（）是指按照水平来确定分级别setVerticalGroup（）是按照垂直来确定的，他们的级别是按照group去设置优先级别的，级别越高就显示越上面 多个component添加到parallelgroup然后多个parallelgroup添加到sequentialgroup中去然后在设置到grouplayout中 */JLabel LB10 = new JLabel(u5907u6CE8);LB10.setFont(new Font(宋体, Font.PLAIN, 18);TF3 = new JTextField();TF3.setColumns(10);JButton But1 = new JButton(u63D0u4EA4);But1.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) String ID,username,banji,beizhu,xueyuan,zhuanye,shengfen,city; ID=TF1.getText();username=TF2.getText();xueyuan=new String(String) cbB1.getSelectedItem();/*这一句话十分值得注意！我觉得很有道理的样子*/banji=new String(String) cbB3.getSelectedItem();zhuanye=new String(String) cbB2.getSelectedItem();shengfen=new String(String) comboBox_1.getSelectedItem();city=new String(String) comboBox_2.getSelectedItem();beizhu=TF3.getText();JOptionPane.showMessageDialog(null, 您输入的信息是 +n+学号： +ID+ n+用户名: +username+n+学院: +xueyuan+n+专业: +zhuanye+n+班级: +banji+n+籍贯 + shengfen+city+n+性别: + s1+s2+n+爱好 ：+s3+ +s4+n+ +s5+n+ +s6+n+ +s7+n+备注 ：+beizhu););But1.setFont(new Font(宋体, Font.PLAIN, 18);JButton But2 = new JButton(u91CDu7F6E);But2.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) TF1.setText();TF2.setText();TF3.setText();CB1.setSelected(false);CB2.setSelected(false);CB3.setSelected(false);CB4.setSelected(false);CB5.setSelected(false);rB1.setSelected(false);rB2.setSelected(false);cbB1.setModel(new DefaultComboBoxModel(new String u8BF7u4E0Bu62C9u5217u8868u9009u62E9u5B66u9662, u8BA1u7B97u673Au5B66u9662, u6750u51B6u5B66u9662, u57CEu5EFAu5B66u9662, u5916u56FDu8BEDu5B66u9662, u4FE1u606Fu5B66u9662, u8D44u73AFu5B66u9662, u7BA1u7406u5B66u9662, u7406u5B66u9662, u533Bu5B66u9662);cbB2.setModel(new DefaultComboBoxModel(new String u8BF7u4E0Bu62C9u5217u8868u9009u62E9u4E13u4E1A, u4FE1u606Fu5B89u5168, u8F6Fu4EF6u5DE5u7A0B, u7F51u7EDCu5DE5u7A0B, u8BA1u7B97u673Au79D1u5B66u4E0Eu6280u672F);cbB3.setModel(new DefaultComboBoxModel(new String u8BF7u4E0Bu62C9u5217u8868u9009u62E9u73EDu7EA7, XA1301, XA1302, R1, R2, W1, W2, W3, DB1, DB2, J1, J2, J3, J4, J5, DZ1, DZ2, DZ3);comboBox_1.setSelectedItem(false);comboBox_2.setSelectedItem(false););But2.setFont(new Font(宋体, Font.PLAIN, 18);GroupLayout gl_cP1 = new GroupLayout(cP1);gl_cP1.setHorizontalGroup(gl_cP1.createParallelGroup(Alignment.LEADING).addGroup(gl_cP1.createSequentialGroup().addGap(25).addGroup(gl_cP1.createParall