java实现链表

头插发建立链表，直接见代码：

public class Test{     public static void main(String args[]) {         new Student("Tom", 'm', 90, 88);         new Student("Jack", 'm', 66, 89);         new Student("Mary", 'f', 76, 86);         System.out.println("name\tsex\tchinese\tenglish");         Student.print();     } } class Student {     protected  String   name;     protected  char     sex;     protected  int      chinese;     protected  int      english;     protected  Student  next;     static Student list;      //声明为静态变量，在每次构建实例时将list指向自身，那么在下一个对象创建时的list就为上一个对象的引用     Student (String name, char sex, int chinese, int english)   {         this.name=name;         this.sex=sex;         this.chinese=chinese;         this.english=english;         this.next=list;//自己的next指向上一个对象         list=this;//将list指向自己     }     static void print() {         Student friend=list;         if (friend==null)             System.out.println("The list is empty.");         else {             do{                 System.out.println(friend.toString());                 friend=friend.next;             }while(friend!=null);         }     }     public String toString()  {         return new String(name+"\t"+sex+"\t"+chinese+"\t"+english);     } }

输出为：