List集合存储学生对象三种遍历方式

package com.lesson_13;
 
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
 
public class ListDemo {
	public static void main(String[] args) {
		//创建List集合对象
		List list = new ArrayList<>();
		
		Student s1 = new Student("张三丰1", 31);
		Student s2 = new Student("张三丰2", 32);
		Student s3 = new Student("张三丰3", 33);
		
		//把学生添加到集合
		list.add(s1);
		list.add(s2);
		list.add(s3);
		
		//迭代器：集合特有的遍历方式
		Iterator it = list.iterator();
		while(it.hasNext()) {
			Student s = it.next();
			System.out.println(s.getName());
		}
		System.out.println("----------");
	
		//普通for：带有索引的遍历方式
		for(int i=0; i
			Student s = list.get(i);
			System.out.println(s.getName());
		}
		System.out.println("----------");
 
		//增强for：最方便的遍历方式
		for(Student s : list) {
			System.out.println(s.getName());
		}
		
		
		System.out.println("----------");
		
		LinkedList linkedList = new LinkedList();
		linkedList.add("hello");
		linkedList.add("world");
		linkedList.add("java");
		
		for(String s:linkedList) {
			System.out.println(s);
		}		
		//剩下两种遍历方式大家补齐
		
		
	}
}

还有一个ArrayList

package com.lesson_17;
 
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
 
import com.lesson_13.Student;
 
public class ArrayListDemo {
	public static void main(String[] args) {
		//创建ArrayList集合对象
		ArrayList array = new ArrayList<>();
		
		//创建学生对象
		Student s1 = new Student("张三丰1", 31);
		Student s2 = new Student("张三丰2", 32);
		Student s3 = new Student("张三丰3", 33);
		
		//把学生添加到集合
		array.add(s1);
		array.add(s2);
		array.add(s3);
		
		//迭代器：集合特有的遍历方式
		Iterator it = array.iterator();
		while(it.hasNext()) {
			Student s = it.next();
			System.out.println(s.getName());
		}
		System.out.println("----------");
 
		//普通for：带有索引的遍历方式
		for(int i=0; i
			Student s = array.get(i);
			System.out.println(s.getName());
		}
		
		//增强for：最方便的遍历方式
		for(Student s : array) {
			System.out.println(s.getName());
		}
	}
}

下面是Student类

package com.lesson_13;
 
public class Student {
	private String name;
	private int age;
	
	public Student() {
	}
	
	public Student(String name, int age) {
		this.name = name;
		this.age = age;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	
}