实验1 java基本结构编程.doc

java编程1.使用记事本编写一个名为Exp1_1.java的JAVA源程序，程序的功能输出个人的真实信息，包括班级、姓名、学号package exp1_1;public class Exp1_1 public static void main(String args) System.out.println(班级:1107班,姓名:徐燕梅,学号:111010215); 2.使用文本编辑软件Editplus创建一个名为Exp1_2.java的JAVA源程序，程序要求输入两个整数，比较这两个整数大小，并输出大的数。package exp1_2;import java.util.Scanner;public class Exp1_2 public static void main(String args) int a,b; Scanner in=new Scanner(System.in); /输入方法 System.out.println(请输入2个整数:); a=in.nextInt(); /输入整数 b=in.nextInt(); if(ab) System.out.println(max=+a); else System.out.println(max=+b); 3. 使用Netbeans编写一个名为Exp1_3的项目，用于输出n行由*号组成的图形，其中第i行共有2i-1个*号。package exp1_3;public class Exp1_3 public static void main(String args) int n=9; for(int i=1;i=n;i+) for(int j=1;j=2*i-1;j+) System.out.print(*); System.out.println(); 4. 使用Netbeans编写一个名为Exp1_4的项目，在该项目的main函数中定义一个int型数组，数组的大小为50，随机产生每个数组元素的值，要求每个数组元素的值均在0至100之间，求出该数组的平均值，输出其平均值和最大值。package exp1_4;public class Exp1_4 private static int i; public static void main(String args) int num=new int50; int sum=0; int max=0; for( i=0;i50;i+)或for(int i=0;imax) max=numi; System.out.println(平均值为+sum/50.0); System.out.println(max=+max);5. 使用Netbeans编写一个名为Exp1_5的项目用于输出乘法表package exp1_5;public class Exp1_5 public static void main(String args) for(int i=1;i=9;i+) for(int j=1;jj) a=-a*x*x/(2*i+1)*(2*i+2); sum=sum+a; i+; System.out.println(cos+x+的值为:+sum); public static void main(String args) System.out.print(输入x的值:); Scanner input=new Scanner(System.in); double a=input.nextDouble(); Exp2_1 b=new Exp2_1(); b.calcos(a); 2. 编写一个名为Exp2_2的java程序，用于输出21世纪某年某月的月历，其中年、月在运行时输入。package exp2_2;import java.util.Scanner;public class Exp2_2 public static void main(String args) int day=0,0,31,59,90,120,151,181,212,243,273,304,334,365; Scanner in=new Scanner(System.in); boolean bool=true; int m=1; while(bool) System.out.print(请输入月份(112):); m=in.nextInt(); if(m=1&m=12) bool=false; else System.out.println(月份必须在112:); int start=2; System.out.println(日 一 二 三 四 五 六); int i,n; n=(start+daym)%7; for(i=0;i=daym+1-daym;i+) if(n%7=0) System.out.println(); System.out.printf(%3d, i); n+; System.out.println(); 3. 编写一个名为Exp2_3的java程序，从键盘输入一行文本，分别输出每个单词以及单词的数目。假设文本行只有字母和空格，每个单词由若干个字母组成，单词之间由一个或多个空格分隔。要求输出时每行显示一个单词。package exp2_3;import java.util.Scanner;public class Exp2_3 public static void main(String args) String str; Scanner in=new Scanner(System.in); System.out.println(请输入一串文本); str=in.nextLine(); System.out.println(str); int count=0; boolean isSpace=true; for(int i=0;istr.length();i+) if(str.charAt(i)!= ) System.out.print(str.charAt(i); isSpace=true; else if(isSpace) isSpace=false; System.out.println(); count+; if(str.charAt(str.length()-1)!= ) count+; System.out.println(共有+count+单词n); 1.在该项目中新建一个java类：Box类，包括private成员变量length、width、heigth，public成员方法：设置与返回各成员变量的方法；构造方法。在主类的main方法中创建该类的对象，并输出其体积。主类：package exp3;public class Exp3 public static void main(String args) Box b=new Box(2,2,2); int a=b.Value(); System.out.println(体积a=+b.Value(); Box类：package exp3;public class Box private int length,width,heigth; public Box() length=2; width=2; heigth=2; public int Value() return length*width*heigth; public Box(int length, int width, int heigth) this.length = length; this.width = width; this.heigth = heigth; 2.创建一个圆类Circle，在主类的主方法中创建该类对象，并输出圆的面积.package circle;public class Circle int r; public static void main(String args) Circle cirl=new Circle(2); System.out.println(cirl.r*cirl.r*3.14); public Circle(int r) this.r = r; 1.创建一个名为Exp4_1的项目。在该项目的exp4_1包中新建一个日期类Date，在Exp4_1中创建一个包：student，在该包中创建一个学生类：Stu，一个成绩类Score。Exp4_1类：package exp4_1;import Student.*; public class Exp4_1 public static void main(String args) Date data=new Date(1998,1,22); System.out.println(data); Score score=new Score(87,99,88); System.out.println(score); Stu stu=new Stu(001,小小); stu.setBirthday(2121,1,1); stu.setScore(77,88,99); stu.printstu(); Date类：package exp4_1;public class Date int year, month, day; public Date(int year, int month, int day) this.year = year; this.month = month; this.day = day; public Date() public int getDay() return day; public void setDay(int day) this.day = day; public int getMonth() return month; public void setMonth(int month) this.month = month; public int getYear() return year; public void setYear(int year) this.year = year; Override public String toString() return year + 年 + month + 月 + day + 日; Stu类：package Student;import exp4_1.*;public class Stu String no; String name; Date birthday; Score score; public Stu(String no, String name) this.no = no; = name; birthday=new Date(); score=new Score(); public String getName() return name; public void setBirthday(int y ,int m,int d) this.birthday.setYear(y); this.birthday.setMonth(m); this.birthday.setDay(d); public void setScore(int c,int m,int e) this.score.chinese=c; this.score .math=m; this.score.english=e; this.score.setChinese(e); this.score.setMath(m); this.score.setEnglish(e); public void setName(String name) = name; public String getNo() return no; public void setNo(String no) this.no = no; public void printstu() System.out.println(学号:+no); System.out.println(姓名:+name); System.out.println(出生日期:+this.birthday); System.out.println(成绩:+this.score); Score类: package Student;public class Score int chinese,math,english; public Score(int chinese, int math, int english) this.chinese = chinese; this.math = math; this.english = english; public Score() public int getChinese() return chinese; public int getMath() return math; public int getEnglish() return english; public void setChinese(int chinese) this.chinese = chinese; public void setMath(int math) this.math = math; public void setEnglish(int english) this.english = english; Override public String toString() return 语文:+chinese+,数学:+math+,英语:+english; 2.将课程的编码、课程名称、考试日期、教师姓名 定义为类变量，并添加一个类方法用于设置这些类变量的值，添加一个类方法用于输出这些类变量的值，在主方法中通过类名.类方法名设置课程信息和输出，而学生信息通过构造方法设置。Exp5_2类：package exp5_2;public class Exp5_2 public static void main(String args) ScoreReport stu=new ScoreReport2; ScoreReport.setCourse(001,数分,2013.6.25,李教授); stu0=new ScoreReport(101001,小李,78); stu1=new ScoreReport(101002,小陈,88); ScoreReport.printCourse(); System.out.println(stu0); System.out.println(stu1); ScoreReport类：package exp5_2;public class ScoreReport static String courseID; static String courseName; static String testDate; static String teacherName; String stuID; String strName; int score;public static void setCourse(String ID,String Name,String Date,String teacher) courseID=ID; courseName=Name; testDate=Date; teacherName=teacher; public ScoreReport(String stuID, String strName, int score) this.stuID = stuID; this.strName = strName; this.score = score; public static String getCourseID() return courseID; public static String getCourseName() return courseName; public int getScore() return score; public void setScore(int score) this.score = score; public String getStrName(String strName) return strName; public void setStrName(String strName) this.strName = strName; public String getStuID() return stuID; public void setStuID(String stuID) this.stuID = stuID; public static String getTeacherName() return teacherName; public static String getTestDate() return testDate; public static void printCourse() System.out.println(课程编号:+courseID+课程名称:+courseName); System.out.println(授课教师:+teacherName+考试日期:+testDate); Override public String toString() return 学号: + stuID + , 姓名: + strName + ,成绩: + score + ; 1. 几何图元类层次的设计父类：几何图元类Shape子类1：矩形类Rectangle（父类为几何图元类）子类2：正方形类Square（父类为矩形类）Exp6_1类：package exp6_1;import java.awt.Color;import java.awt.Point;import java.awt.Rectangle;public class Exp6_1 public static void main(String args) Point p=new Point(300,300); Color c=new Color(255,255,0); Rectangle rect=new Rectangle(100,200); System.out.println(rect); Shape类: package exp6_1;import java.awt.Color;import java.awt.Point;public class Shape Color color; Point point; public Shape() color = new Color(); point = new Point(0, 0); public Shape(Color c, Point p) this.color = c; this.point = p; color = new Color(); point = new Point(p); Override public String toString() return Shape + 颜色: + color + , 点: + point + ; class Color int r, g, b; public Color() r = 0; g = 0; b = 0; public Color(int r, int g, int b) this.r = r; this.g = g; this.b = b; Override public String toString() return 颜色 + r= + r + , g= + g + , b= + b + ; /矩形类 class Rectangle extends Shape int length, width; public Rectangle() public Rectangle(int length, int width, Color c, Point p) super(c, p); this.length = length; this.width = width; public Rectangle(int length, int width) super(); this.length = length; this.width = width; public int area() return length * width; public int permenter() return 2 * (length + width); Override public String toString() return super toString + length= + length + , width= + width; /正方形类 class Square extends Rectangle public Square(int length) this.length = length; public Square(int length, Color c, Point p) super(length, length, c, p); this.length = length; Override public String toString() return 正方形: + super.toString(); 1.设计一个抽象类动物类：Animal，动物类的子类：Dog类、Cat类、Duck类.Exp7_1类：package exp7_1;public class Exp7_1 public static void main(String args) AnimaltheAnimals= new Dog(小一,狗),new Cat(小二,猫),new Duck(小小,鸭) ; for(int i=0;itheAnimals.length;i+) theAnimalsi.sound(); Animal类：package exp7_1;public abstract class Animal protected String type; protected String name; protected String breed; public Animal(String type, String name, String breed) this.type = type; = name; this.breed = breed; Override public String toString() return Animal + type= + type + , name= + name + , breed= + breed + ; public abstract void sound(); Dog类：package exp7_1;public class Dog extends Animal public Dog(String name) super(Dog,name,Unknow); public Dog(String name,String breed) super(Dog,name,breed); Override public void sound() System.out.println(狗的叫声是汪汪); Cat类：package exp7_1;public class Cat extends Animal public Cat(String name) super(Cat,name,Unknow); public Cat(String name,String breed) super(Cat,name,breed); Override public void sound() System.out.println(猫的叫声是喵喵); Duck类:package exp7_1;public class Duck extends Animal public Duck(String name) super(Duck,name,Unknow); public Duck(String name,String breed) super(Duck,name,breed); Override public void sound() System.out.println(鸭的叫声是嘎嘎叫); 1.在D:A下创建一个文件a.txt，向文件中写入下面字符串：专业：信息与计算科学年级：11级成绩：86.5然后读出文件中内容并输出package exp8;import java.io.*;public class Exp8 public static void main(String args) File dir = new File(d:/a/a.txt);/定义文件对象 try dir.createNewFile();/创建文件 try (DataOutputStream dos = new DataOutputStream(new FileOutputStream(dir) dos.writeChars(专业：信息与计算科学); dos.writeChar(n); dos.writeChars(年级：11级); dos.writeChar(n); dos.writeChars(成绩：86.5); dos.writeChar(n); try (DataInputStream dis = new DataInputStream(new FileInputStream(dir) int n; while(n=dis.readChar()!=-1) System.out.print(char)n); catch (Exception e) 1.设计一个如下图所示的界面package exp9_1;import java.awt.BorderLayout;import javax.swing.*;public class Exp9_1 extends JFrame JPanel jp1=null; JPanel jp2=null; JPanel jp3=null; JLabel label1=null; JTextField textfield=null; JLabel label2=null; JPasswordField password=null; JButton jb1=null; JButton jb2=null; public static void main(String args) Exp9_1 Exp9_1=new Exp9_1(); public Exp9_1() this.setTitle(实验9_1); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setLocation(200, 200); jp1=new JPanel(); jp2=new JPanel(); jp3=new JPanel(); label1=new JLabel(用户名:); textfield=new JTextField(10); label2=new JLabel(密码:); password=new JPasswordField(10); jb1=new JButton(确定); jb2=new JButton(取消); jp1.add(label1); jp1.add(textfield); this.add(jp1,BorderLayout.NORTH); jp2.add(label2); jp2.add(password); this.add(jp2); jp3.add(jb1); jp3.add(jb2); this.add(jp3,BorderLayout.SOUTH); this.pack(); this.setVisible(true); package exp9_2;import javax.swing.*;import java.awt.*; public class Exp9_2 extends JFrame JPanel jp1=null; JPanel jp2=null; JTextField textfield=null; String str=0,1,2,3,4,5,6,7,8,9,+,-,*,/,=; JButton jb=new JButton15; public static void main(String args) Exp9_2 Java9_2=new Exp9_2(); public Exp9_2() this.setTitle(简易计算器);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setLocation(400,400); jp1=new JPanel(); jp2=new JPanel(); textfield=new JTextField(10); jp1.add(textfield); this.add(jp1,BorderLayout.NORTH); jp2.setLayou