Java elements from Linked List Program

How to add element at last position in Linked List

package com.java2novice.linkedlist;

import java.util.LinkedList;

public class MyAddLast

{

public static void main(String a[])

{

        LinkedList arrl = new LinkedList();

        arrl.add("First");

        arrl.add("Second");

        arrl.add("Third");

        arrl.add("Random");

        System.out.println(arrl);

        System.out.println("Adding element at last position...");

        arrl.addLast("I am last");

        System.out.println(arrl);

        System.out.println("Adding element at last position...");

        arrl.offerLast("I am last - 1");

        System.out.println(arrl);

        System.out.println("Adding element at last position...");

        arrl.offer("I am last - 2");

        System.out.println(arrl);

    }

}

How to read first element from Linked List

package com.java2novice.linkedlist;

import java.util.LinkedList;

public class MyFirstElement

{

public static void main(String a[])

{

        LinkedList arrl = new LinkedList();

        arrl.add("First");

        arrl.add("Second");

        arrl.add("Third");

        arrl.add("Random");

        System.out.println("First Element: "+arrl.element());

        System.out.println("First Element: "+arrl.getFirst());

        System.out.println("First Element: "+arrl.peek());

        System.out.println("First Element: "+arrl.peekFirst());

    }

}

How to read last element from Linked List

package com.java2novice.linkedlist;

import java.util.LinkedList;

public class MyLastElement

{

public static void main(String a[])

{

        LinkedList arrl = new LinkedList();

        arrl.add("First");

        arrl.add("Second");

        arrl.add("Third");

        arrl.add("Random");

        System.out.println("Last Element: "+arrl.getLast());

        System.out.println("Last Element: "+arrl.peekLast());

    }

}

How to iterate through Linked List in reverse order

package com.java2novice.linkedlist;

import java.util.Iterator;

import java.util.LinkedList;

public class MyReverseIter

{

public static void main(String a[])

{

        LinkedList arrl = new LinkedList();

        arrl.add("First");

        arrl.add("Second");

        arrl.add("Third");

        arrl.add("Random");

        Iterator itr = arrl.descendingIterator();

        while(itr.hasNext())

       {

            System.out.println(itr.next());

        }

    }

}

Linked List push(), pop() operations

package com.java2novice.linkedlist;

import java.util.LinkedList;

public class MyPushPopOpr

{

 public static void main(String a[])

{

        LinkedList arrl = new LinkedList();

        arrl.add("First");

        arrl.add("Second");

        arrl.add("Third");

        arrl.add("Random");

        System.out.println(arrl);

        arrl.push("push element");

        System.out.println("After push operation:");

        System.out.println(arrl);

        arrl.pop();

        System.out.println("After pop operation:");

        System.out.println(arrl);

    }

}

How to remove elements from Linked List

package com.java2novice.linkedlist;

import java.util.LinkedList;

public class MyAllRemoveOprs

{

public static void main(String a[])

{

        LinkedList arrl = new LinkedList();

        arrl.add("First");

        arrl.add("Second");

        arrl.add("Third");

        arrl.add("Random");

        arrl.add("four");

        arrl.add("five");

        arrl.add("six");

        arrl.add("seven");

        arrl.add("eight");

        arrl.add("nine");

        System.out.println(arrl);

        System.out.println("Remov() method:"+arrl.remove());

        System.out.println("After remove() method call:");

        System.out.println(arrl);

        System.out.println("remove(index) method:"+arrl.remove(2));

        System.out.println("After remove(index) method call:");

        System.out.println(arrl);

        System.out.println("Remov(object) method:"+arrl.remove("six"));

        System.out.println("After remove(object) method call:");

        System.out.println(arrl);

        System.out.println("removeFirst() method:"+arrl.removeFirst());

        System.out.println("After removeFirst() method call:");

        System.out.println(arrl);

        System.out.println("removeFirstOccurrence() method:"

          +arrl.removeFirstOccurrence("eight"));

        System.out.println("After removeFirstOccurrence() method call:");

        System.out.println(arrl);

        System.out.println("removeLast() method:"+arrl.removeLast());

        System.out.println("After removeLast() method call:");

        System.out.println(arrl);

        System.out.println("removeLastOccurrence() method:"

          +arrl.removeLastOccurrence("five"));

        System.out.println("After removeLastOccurrence() method call:");

        System.out.println(arrl);

    }

}