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>coursesToSelect;
public Settest(){
coursesToSelect=new ArrayList<Course>();
}
public void testAdd(){
//创建一个课程对象，并通过调用add方法添加到备选课程List中
Course cr1=new Course("1","数据结构");
coursesToSelect.add(cr1);
Course temp=(Course) coursesToSelect.get(0);
// System.out.println("添加了课程:"+temp.id + "."+temp.name);
Course cr2=new Course("2","c语言");
coursesToSelect.add(0,cr2);
Course temp2=(Course) coursesToSelect.get(0);
// System.out.println("添加了课程:"+temp2.id+":"+temp2.name);
//以下方法会抛出数组越界异常
//Course cr3=new Course("3","java");
// coursesToSelect.add(4,cr3);
Course[] course={new Course("3","离散数学"),new Course("4","汇编语言")};
coursesToSelect.addAll(Arrays.asList(course));
Course temp3=(Course)coursesToSelect.get(2);
Course temp4=(Course)coursesToSelect.get(3);
//System.out.println("添加了两门课程:"+temp3.id+":"+temp3.name
// +temp4.id+":"+temp4.name);
Course[] course2={new Course("5","大学英语"), new Course("6","高等数学")};
coursesToSelect.addAll(Arrays.asList(course2));
Course temp5=(Course)coursesToSelect.get(4);
Course temp6=(Course)coursesToSelect.get(5);
//System.out.println("添加了两门课程:"+temp5.id+":"+temp5.name
// +temp6.id+":"+temp6.name);
}
//System.out.println("添加了两门课程:"temp5.id+":"+temp5.name+temp6.id+":"+temp6.name);
public void testGet(){
int size=coursesToSelect.size();
System.out.println("有如下课程待选 :");
for(int i=0; i<size;i++){
Course cr=(Course) coursesToSelect.get(i);
//System.out.println("课程"+cr.id+":"+cr.name);
}
}
public void testForEach(){
System.out.println("有如下课程待选 (通过ForEach访问)");
for(Object obj:coursesToSelect){
Course cr=(Course) obj;
System.out.println("课程"+cr.id+":"+cr.name);
}
}
public static void main(String[] args) {
// TODO 自动生成的方法存根
Settest st=new Settest();
st.testAdd();
st.testForEach();
//创建一个学生对象
Student student=new Student("1", "小明");
System.out.println("欢迎同学小明:"+Student.name+"选课!");
//创建一个Scanner对象，用来接收从键盘输入的课程ID
Scanner console=new Scanner(System.in);
for (int i=0;i<3; i++){
System.out.println("请输入课程ID");
String courseId=console.next();
for (Course cr:st.coursesToSelect){
if(cr.id.equals(courseId)){
student.courses.add(cr);
}
}
}
st.testForEach1ForSet(student);
}
private void testForEach1Set(Student student) {
//TODO 自动生成的方法存根
}
private void testForEach1Set() {
//TODO 自动生成的方法存根
}
public void testForEach1ForSet(Student student){
System.out.println("共选择了:"+student.courses.size()+"门课程");
//打印输出学生所选的课程
for (Course cr:student.courses){
System.out.println("选择了课程:"+cr.id+":"+cr.name);
}
}
}
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