内容发布更新时间 : 2024/12/22 16:56:36星期一 下面是文章的全部内容请认真阅读。
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四、程序设计
1.编写一个“Student”类,该类拥有属性:校名、学号、性别、出生日期。方法包含设置姓名和成绩(setName(),setScore())。再编写“Student”类的子类:Undergraduate(大学生)。Undergraduate类除拥有父类属性和方法外,还有其自己的属性和方法:附加属性包括系(department)、专业(major);方法包含设置系别和专业。(setDepartment(),setMajor())。 1. class Student {
String name=\湖南****学院\ int sNum=888888; String sex=\男\
String birth=\ String sname; int Score;
void setName(String a){ sname=a; }
void setScore(int b){ Score=b; }
void show(){
System.out.println(\所在学校:\ System.out.println(\学号:\ System.out.println(\性别:\ System.out.println(\生日:\ System.out.println(\姓名:\ System.out.println(\成绩:\ } }
class Undergraduate extends Student{ String department; String major;
void setDeparment(String c){ department=c; }
void setMajor(String d){ major=d; }
void show1(){ super.show();
System.out.println(\系部:\ System.out.println(\专业:\
} }
class Student{
public static void main(String arg[]){ Student A=new Student();
Undergraduate B=new Undergraduate(); B.setName(\许翼\ B.setScore(95);
B.setDeparment(\信息工程系\ B.setMajor(\计算机网络\ B.show1(); } }
2.从键盘或者命令行输入3个数,求这三个数的最大值。 2. import javax.swing.JOptionPane; public class MaxNum {
public static String sum(int a,int b,int c,int d){ if(a>b){ d=a; } if(b>d){ d=b; } if(c>d){ d=c; }
return \你输入的三个数字中,最大的数是\ }
public static void main(String[] args) { int number1,number2,number3; try{
number1=Integer.parseInt(JOptionPane.showInputDialog(\ number2=Integer.parseInt(JOptionPane.showInputDialog(\ number3=Integer.parseInt(JOptionPane.showInputDialog(\ System.out.println(sum(number1,number2,number3,0)); }catch(NumberFormatException ne){
System.out.println(ne.toString()); }
System.exit(0); }
the first Number: \the second Number: \the third Number: \ }
3. import java.awt.*;
public class TestCenterPanel {
public static void main(String args[]) { new MyFrame3(300,300,600,400,Color.BLUE); } }
class MyFrame3 extends Frame{ //private Panel p;
MyFrame3(int x,int y,int w,int h,Color c){ super(\ setLayout(null); setBounds(x,y,w,h); setBackground(c);
Panel p = new Panel(null); p.setBounds(w/4,h/4,w/2,h/2); p.setBackground(Color.pink); add(p);
setVisible(true); } }