How to set arrayList size as null?

Posted by Jessy on Stack Overflow See other posts from Stack Overflow or by Jessy
Published on 2010-04-01T01:52:32Z Indexed on 2010/04/01 2:03 UTC
Read the original article Hit count: 432

Filed under:

java

|

arraylist

|

null

String a []= {null,null,null,null,null};

//add array to arraylist
ArrayList<Object> choice = new ArrayList<Object>(Arrays.asList(a)); 

System.out.println(choice.size());

Why the size of the arrayList choice is 5 when all the elements have been set to null

© Stack Overflow or respective owner

Related posts about java

Tomcat 6: Access Control Exception?

as seen on Server Fault - Search for 'Server Fault'
I'm trying to setup a tomcat6 server, and I'm trying to match another setup someone else established. However, my deployment (default Ubuntu install) uses a policy.d/ directory structure, and the established server just uses a catalina.policy file. I've tried setting every entry in policy.d to match… >>> More
Problem in creation MDB Queue connection at Jboss StartUp

as seen on Stack Overflow - Search for 'Stack Overflow'
I am not able to create a Queue connection in JBOSS4.2.3GA Version & Java1.5, as I am using MDB as per the below details. I am putting this MDB in a jar file(named utsJar.jar) and copied it in deploy folder of JBOSS, In the test env. this MDB works well but in another env. [ env settings and… >>> More
failing to establish connection between Postgres db and gwt

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am using Postgres and gwt 2.0 for one of my applications. I am facing problem connecting to the database. When I try to connect it gives "ClassNotFoundException". Here is what I get when I try to connect to database: java.lang.ClassNotFoundException: org.postgresql.Driver at java.net… >>> More
failing to establish connection between postgre db and gwt

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, For i am using postgre and gwt 2.0 for one of my applications. I am facing problem connecting to the database. When i try to connect it gives "ClassNotFoundException". Here is what i get when i try to connect to database: java.lang.ClassNotFoundException: org.postgresql.Driver at java.net… >>> More
Migration and deployement problems JBoss 4.2.2.GA to JBoss 6.0.0.M2

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to migrate an application running on JBoss 4.2.2.GA to JBoss 6.0.0.M2 I give you some log to explain my problem : boot.log : 2010-03-16 09:59:29,406 ERROR [org.jboss.system.server.profileservice.ProfileServiceBootstrap] (Thread-2) Failed to load profile: Summary of incomplete deployments… >>> More

Related posts about arraylist

Convert Java Arraylist return from Java WebService to C# Arraylist

as seen on Stack Overflow - Search for 'Stack Overflow'
In my C# program, I would like to consume the Java Web Service Method which replies the java.Util.ArrayList. I don't know how to convert the Java ArrayList to C# ArrayList. This is Java Codes @WebMethod @WebResult(name = "GetLastMessages") @SuppressWarnings("unchecked") public ArrayList<Message>… >>> More
Data from 6 ArrayLists into a single JTable - Java Swing

as seen on Stack Overflow - Search for 'Stack Overflow'
I have created a JTable which is populated by various arraylists which get their data from a text list using a "~" to split. The issue I am having is that the table is displaying all data from the list on a single row. For example: Column1 Column2 Column2 Column2 … >>> More
java arraylist : same values to a new arraylist

as seen on Stack Overflow - Search for 'Stack Overflow'
public static void rechnung(List<String> array) { for (int i = 0; i < array.size(); i++) { for (int j = 0; j < array.size(); j++) { if (i != j) { System.out.println(array.get(i) + " gleich " + array… >>> More
JAVA: Sort ArrayList<ArrayList<Integer>> on multiple columns

as seen on Stack Overflow - Search for 'Stack Overflow'
First, I did do my homework searching before posting here. My requirement seems to be slightly different compared to questions posted out there. I have a matrix like ArrayList<ArrayList<Integer>> in the following form | id1 | id2 | score | |-----|-----|-------| | 1 | 3 | 95% | |… >>> More
convert ArrayList.toString() back to ArrayList in one call

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a toString() representation of an ArrayList. Copying the toString() value to clipboard, I want to copy it back into my IDE editor, and create the ArrayList instance in one line. In fact, what I'm really doing is this: my ArrayList.toString() has data I need to setup a unit test. I want… >>> More