求一个JAVA的单链表程序

package OS;
public class IntNode
{
public String name;
//public int run_time=44;
public int run_time=(int)(Math.random()*100);
public IntNode next;
public int num;

public IntNode(int n,String n1){
this(n,n1,null);
}
public IntNode(int n,String n1,IntNode nn){
num=n;
name=n1;
next=nn;
}
}
package OS;

public class IntSLList
{
public IntNode head;//头尾“指针”
public IntNode tail;
public IntSLList(){
head=tail=null;
}
//判别链表是否为空
public boolean isEmpty(){
return head==null;
}
//从链表头部添加结点————此处的函数的传递参数是一个数值，也就是info
public void addToHead(IntNode some){
some.next=head;
head=some;
if(tail==null)
tail=head;
}
//从链表的尾部添加结点————同上
public void addToTail(IntNode some){
if(!isEm