package com.imooc.collection;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.Scanner;

public class SetTest {

public List<Course> courseToSelect;

public SetTest(){

courseToSelect=new ArrayList<Course>();

}

public void testAdd(){

// 創(chuàng)建一個(gè)課程對(duì)象，并通過調(diào)用add方法，添加調(diào)用add方法，添加到備選課程;List中

Course cr1=new Course("1.","數(shù)據(jù)結(jié)構(gòu)");?

courseToSelect.add(cr1);

Course temp=(Course) courseToSelect.get(0);

// System.out.println(temp.id+temp.name);

Course cr2=new Course("2.","C語(yǔ)言");

courseToSelect.add(1,cr2);

Course temp2=(Course) courseToSelect.get(1);

// System.out.println(temp2.id+temp2.name);

Course[] cr3={new Course("3.","離散數(shù)學(xué)"),new Course("4.","匯編語(yǔ)言")};

courseToSelect.addAll(Arrays.asList(cr3));

Course temp3=(Course) courseToSelect.get(2);

Course temp4=(Course) courseToSelect.get(3);

// System.out.println(temp3.id+temp3.name+temp4.id+temp4.name);

Course[] cr4={new Course("5.","算法"),new Course("6.","大學(xué)英語(yǔ)")};

courseToSelect.addAll(0,Arrays.asList(cr4));

Course temp5=(Course) courseToSelect.get(4);

Course temp6=(Course) courseToSelect.get(5);

// System.out.println(temp5.id+temp5.name+temp6.id+temp6.name);

}

public void foreach(){

System.out.println("foreach");

for(Course cr:courseToSelect){

System.out.println(cr.id+cr.name);

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

SetTest st=new SetTest();

st.testAdd();

st.foreach();

Student student=new Student("1","小米");

System.out.println("歡迎"+student.name+"選課");

Scanner console=new Scanner(System.in);

for(int i=0;i<3;i++){

System.out.println("輸入課程ID");

String courseId=console.next();

for(Course cr:st.courseToSelect){

if(cr.id.equals(courseId)){

student.courses.add(cr);

}

}

}

st.tesx(student);

System.out.println(student.courses.size());

}

public void tesx(Student student){

for(Course cr:student.courses){

System.out.println(cr.id+cr.name);

}

}

}

//學(xué)生類

package com.imooc.collection;

import java.util.HashSet;

import java.util.Set;

public class Student {

?

? ? public String id;

? ? ?

? ? public String name;

? ? ?

? ? public Set<Course> courses;

?

? ? public Student(String id, String name) {

? ? ? ? this.id = id;

? ? ? ? this.name = name;

? ? ? ? this.courses = new HashSet<Course>();

? ? }

}

//Course 類

package com.imooc.collection;

public class Course {

?

? ? public String id;

? ? ?

? ? public String name;

? ? ?

? ? public Course(String id, String name) {

? ? ? ? this.id = id ;

? ? ? ? ?

? ? ? ? this.name = name;

? ? }

? ? ?

? ? public Course() {

? ? ? ? ?

? ? }

}