Solved

LinkedList data structure ... also synchronized?

Posted on 2006-06-13
7
342 Views
Last Modified: 2010-03-31
I need to implement a linkedlist type of datastructure, where nodes are linearly ordered, nodes are inserted and removed at various positions in the list.

I began experimenting with java's LinkedList class, but it provides no method to insert a node into a list. So do I need to create a new class from scratch or can I somehow append the LinkedList class?

Am I better off implementing my own data structure?

Also there is an example of implemented linked list here:
http://examples.oreilly.com/jenut/LinkedList.java
but I don't quite understand the importance of synchronizing, can anyone give an example as to when its necessary?

Also does implementing the linkable interface do anything for the synchronization?

0
Comment
Question by:polkadot
  • 6
7 Comments
 
LVL 24

Expert Comment

by:sciuriware
ID: 16896121
If only one thread manipulates the list synchronisation is not necessary.
Otherwise, you need a Vector or must do all the synchronising yourself.

;JOOP!
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 16896128
... the latter means that all methods that may access the linked list have the keyword   synchronised.


This synchronisation costs overhead!!

;JOOP!
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 16896149
use methods like  .add(int index, E element) to add a node at a position.

;JOOP!
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 24

Accepted Solution

by:
sciuriware earned 500 total points
ID: 16896165
Find all other methods you need at http://java.sun.com/j2se/1.4.2/docs/api/java/util/LinkedList.html

;JOOP!
0
 
LVL 30

Expert Comment

by:Mayank S
ID: 16900704
>> but it provides no method to insert a node into a list.

? Meaning inserting between a list?

0
 
LVL 24

Expert Comment

by:sciuriware
ID: 16900877
I think he means at random position.

;JOOP!
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 16917942
:<)
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
In this post we will learn how to connect and configure Android Device (Smartphone etc.) with Android Studio. After that we will run a simple Hello World Program.
The viewer will learn how to implement Singleton Design Pattern in Java.
This video teaches viewers about errors in exception handling.

772 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question