package student_progress;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Iterator;

import java.util.List;

import java.util.Scanner;

public class SetTest {

?public List<Course>courseToSelect;

?private Scanner scanner;

?public Student student;

?public SetTest() {

courseToSelect=new ArrayList<Course>();

this.scanner=new Scanner(System.in);

?}

?public void Add() {

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

Course[] courses= {new Course(1, "數(shù)據(jù)結(jié)構(gòu)"),new Course(2, "c語(yǔ)言"),new Course(3, "離散數(shù)學(xué)"),new Course(4, "匯編語(yǔ)言"),

new Course(5, "高等數(shù)學(xué)"),new Course(6, "大學(xué)英語(yǔ)")};

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

?

?}

?public void testIterator() {

Iterator<Course> it=courseToSelect.iterator();

System.out.println("有如下課程待選(通過(guò)迭代器訪問(wèn)):");

while(it.hasNext()) {

Course cr=(Course) it.next();

System.out.println("課程"+cr.id+":"+cr.name);

}

?}

?//創(chuàng)建學(xué)生對(duì)象并選課

?public void createStudentAndSelectCourse() {

? ? ?student=new Student(1, "小明");

? ? ?System.out.println("歡迎學(xué)生"+student.name+"來(lái)選課");

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

? ? ? System.out.println("請(qǐng)輸入課程ID");

? ? ? int courseId=scanner.nextInt();

? ? ? for(Course cr:courseToSelect) {

? ? ? if(cr.id==courseId) {

? ? ? student.courses.add(cr);

? ? ? }

? ? ? }

? ? ?}

?

?}

?

?}

public static void main(String[] args) {

// TODO Auto-generated method stub

? ? ? SetTest sTest=new SetTest();

? ? ? sTest.Add();

? ?

? ? ? sTest.testContains();

? ? ? sTest.testIterator();

??

}

public void testForeachForSet(Student student) {

? ?//打印輸出，學(xué)生所選的課程

System.out.println("共選擇了："+student.courses.size()+"課程");

? ? ? for(Course cr:student.courses) {

? ? ? System.out.println("選擇了課程："+cr.id+":"+cr.name);

? ? ? }

}

//測(cè)試List的contains方法

public void testContains() {

//請(qǐng)輸入課程名稱

System.out.println("請(qǐng)輸入課程名稱：");

int id1=scanner.nextInt();

Course course2=new Course();

//創(chuàng)建一個(gè)新的課程對(duì)象，ID和名稱，與Course對(duì)象完全一樣

course2.id=id1;

System.out.println("創(chuàng)建課程對(duì)象編號(hào)："+course2.id);

System.out.println("備選課程中是否包含該課程："+course2.id+","+courseToSelect.contains(course2));

if(courseToSelect.contains(course2)) {

System.out.println("課程："+course2.id+"索引位置為："+courseToSelect.indexOf(course2)+1);

}

}

}