125 - 學生、大學生、

Description

定義Student學生類，擁有學號、姓名、性別屬性，提供建構函式，以及相應屬性的get set函式，提供函式attendClass(String className)表示上課。
定義CollegeStudent大學生類繼承自Student類，擁有新增屬性專業，提供建構函式，提供新增屬性的get和set函式
定義GraduateStudent研究生類繼承自CollegeStudent類，擁有新增屬性導師，提供建構函式，提供新增屬性的get和set函式，提供函式doResearch() 表示做研究（列印xx is doing research）。

main函式中對構造的類進行測試

Input

學生類資訊，學號、姓名、性別
大學生類資訊，學號、姓名、性別、專業
研究生類資訊，學號、姓名、性別、專業、導師

Output

學生類資訊
大學生類資訊
研究生類資訊

Sample Input

1 liu female
2 chen female cs
3 li male sc wang

Sample Output

no: 1
name: liu
sex: female
no: 2
name: chen
sex: female
major: cs
no: 3
name: li
sex: male
major: sc
supervisor: wang
li is doing research

Pre Append Code

import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
         Scanner scan = new Scanner(System.in);      
         int no = scan.nextInt();
         String name = scan.next();      
         String sex = scan.next();      
         Student s = new Student(no, name, sex);
         s.print();

         no = scan.nextInt();
         name = scan.next();      
         sex = scan.next();      
         String major = scan.next();
         CollegeStudent c = new CollegeStudent(no, name, sex, major);
         c.print();

         no = scan.nextInt();
         name = scan.next();      
         sex = scan.next();      
         major = scan.next();
         String supervisor = scan.next();
         GraduateStudent g = new GraduateStudent(no, name, sex, major, supervisor );
         g.print();
         g.doResearch();
         scan.close(); 
    }
}
 

 Post Append Code

答案：

package 學生大學生研究生類;
import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner scan = new Scanner(System.in);      
        int no = scan.nextInt();
        String name = scan.next();      
        String sex = scan.next();      
        Student s = new Student(no, name, sex);
        s.print();

        no = scan.nextInt();
        name = scan.next();      
        sex = scan.next();      
        String major = scan.next();
        CollegeStudent c = new CollegeStudent(no, name, sex, major);
        c.print();

        no = scan.nextInt();
        name = scan.next();      
        sex = scan.next();      
        major = scan.next();
        String supervisor = scan.next();
        GraduateStudent g = new GraduateStudent(no, name, sex, major, supervisor );
        g.print();
        g.doResearch();
        scan.close(); 

	}

}

class Student
{
	int no;
	String name;
	String gender;
	
	public Student(int _no, String n, String g) {
		this.no = _no;
		this.name = n;
		this.gender = g;
	}
	public int getNo() {
		return no;
	}
	public void setNo(int no) {
		this.no = no;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getGender() {
		return gender;
	}
	public void setGender(String gender) {
		this.gender = gender;
	}
	public void print()
	{
		System.out.println("no: "+getNo());
		System.out.println("name: "+getName());
        System.out.println("sex: "+getGender());
	}
	
}

class CollegeStudent extends Student
{
	String major;

	public CollegeStudent(int _no, String n, String g, String major) {
		super(_no, n, g);
		this.major = major;
	}

	public String getMajor() {
		return major;
	}

	public void setMajor(String major) {
		this.major = major;
	}
	
	public void print()
	{
		super.print();
		System.out.println("major: "+getMajor());
	}
	
	
}

class GraduateStudent extends CollegeStudent
{
	
	String supervisor;//導師

	public GraduateStudent(int _no, String n, String g, String major, String supervisor) {
		super(_no, n, g, major);
		this.supervisor = supervisor;
	}

	public String getSupervisor() {
		return supervisor;
	}

	public void setSupervisor(String supervisor) {
		this.supervisor = supervisor;
	}
	public void doResearch()
	{
		System.out.println(getName()+" is doing research");
	}
	public void print(){
        super.print();
        System.out.println("supervisor: "+supervisor);
    }


}