what is difference between vector and arraylist?.
Answers were Sorted based on User's Feedback
Answer / guest
vector is synchronized . collection object and variable
slow acess. muntable
array list is never snchronized. collection variable fast
acess
| Is This Answer Correct ? | 16 Yes | 1 No |
Answer / srinivas
Vector is synchronized and compare to array list this slow
access, by defaulst the vector is 10,this is legacy class
Where as arraylist is unsynchronized and fast random
access,in arraylist there is no default size automatically
it is growable once the object is created it will be
allocated,this is advanced class.
| Is This Answer Correct ? | 10 Yes | 2 No |
Answer / srinu
vector:-
1)Vector is a synchronized.
2)These are Thread safe.
3)performance slow
4)it implements
serializible,list,collection,iterable,Randomaccess,clonable
interfaces.
5)vector is optimum storage management.
Arraylist:-
1)ArrayList is not synchronized.
2)these are not safe.
3)performance is high.
4)it implements
serializible,list,collection,iterable,Randomaccess,clonable
interfaces.
5)ArrayList is not a optimum storage management
| Is This Answer Correct ? | 5 Yes | 0 No |
If we want to arrange a collection of objects into an other object then we will use either ArrayList or Vector. When we use these classes all the objects that are placed in it will be stored sequentially one after the other.
ArrayList : If we want to store same type of objects then we will use ArrayList class.
Vector : If we want to store different type of objects then we will use Vector class.
| Is This Answer Correct ? | 1 Yes | 3 No |
What are the types of interface used in the java collections? : java collections
Which server-side script takes the input from JavaScript, can access the database if it needs to, and processes the data.
What causes Out of Memory exception?
Hi Friends , am newbie to ajax. For example just consider one account registration - A form contains 8 text fields with submit button. In this form second texbox contains "username " . On right side of text box there is a label box . On clilck action i need to determine user is available or not. Is it possible on clicking label or should i click submit button.
What is Generic in java? Where can we write Generic ( class or method or objects or etc...)? with simple example? Thanks, Bose. Infosys 2 In which way does a Primitive data type is passed ? Sun- Microsystems 4 what is the use of declaring constructor as private? Sai- Softech 5 what is difference between global methods and local methods? 1 What is meant by class loader and how many types are there? Apple 1 what is meaning of JIT? 4 What is an abstract class? Wipro 5 what is filters and its use? Virtusa 2 why is multiple inheritance not allowed in java? Elementus-Technologies 7 Differences between jdk 1.4 and 1.5 Wipro 4 is JVM platform dependent or independent..? IBM 6 what is main purpose of abstract class? 5 what is difference between colection and collections? Tech-Mahindra 11 What error occurs if a try-catch-finally statement sequence does not have a catch clause? 2 Explain the difference between scrollbar and scrollpane? 1 Explain the differences between public, private, protected and static? 4 Explain the difference between getAppletInfo and getParameterInfo? 1 Is Cegonsoft Pvt.Ltd. a good Institute? 4 Why only one Class is public in one file? Explain in details. Thanks in Advance. 11 Which method will get invoked first in a stand alone application?
Write a interface "CarOperations" with the following methods void turnOnEngin() void turnOffEngin() void turnOnLigths() void turnOffLights() void turnLeft() void turnRight() void accelerate() void deaccelerate() void putBreaks() void releaseBreaks()
who should use JNDI?
what is java virtual machine
2. Write a interface "Car" with the following methods void setName(String) String getName() void setColor(String) String getColor() void setModel(long) long getModel()
my interviewer asked me what technical specification you used how to answer that question
what is jndi?
In hyderabad, which s/w training center is best for java, other than corejava what r the new tools to learn in java,which tool is best & have current requirement,pls give me information about java to learn ?