Java LinkList Methods Tutorial

A basic example on how to use LinkList and ListIterator. We use 3 methods to display contents, remove items and reverse contents of the list.

--------------------CODE-------------------------------

import java.util.List;
import java.util.LinkedList;
import java.util.ListIterator;


class newLists
{
public static void main(String args[])
{
String names[]={"Paul","James","Sam","Clair","George","June"};
List<String> namelist= new LinkedList<String>();


//POPULATE LIST FROM ARRAY
for(String x:names)
namelist.add(x);

//DISPLAY CONTENTS OF LIST
printMe(namelist);


System.out.println("\n\nREMOVED ITEM LIST");
   RemoveStuff(namelist,2,4);
   printMe(namelist);
 
   System.out.println("\n\nREVERSED ITEM LIST");
   ReverseList(namelist);
   
}


//////////////////PRINT ME METHOD////////////////////////
private static void printMe(List<String> passedList)
{
for(String x: passedList)
System.out.printf("%s  ",x);
}

//////////////////REMOVE STUFF METHOD/////////////////////
private static void RemoveStuff(List<String> passedList, int from, int to)
{
passedList.subList(from,to).clear(); //REMOVE PART OF LIST
}


//////////////////REVERSE LIST METHOD/////////////////////
private static void ReverseList (List<String> passedList)
{
                /// PASS CONTENTS TO ITERATOR
ListIterator x = passedList.listIterator(passedList.size());

               ///CYCLE THROUGH THE ITERATOR WHILE CONDITION IS TRUE
while(x.hasPrevious())
{
System.out.printf("%s  ",x.previous());
}
}
}

----------------------------------------------OUTPUT----------------------------------


Paul  James  Sam  Clair  George  June

REMOVED ITEM LIST
Paul  James  George  June

REVERSED ITEM LIST
June  George  James  Paul