dcsimg
Login | Register   
LinkedIn
Google+
Twitter
RSS Feed
Download our iPhone app
TODAY'S HEADLINES  |   ARTICLE ARCHIVE  |   FORUMS  |   TIP BANK
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.


Tip of the Day
Language: Java
Expertise: Intermediate
Dec 23, 1998

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


Arrays are Cheaper and Safer than Vectors

In Java, you can use either a Vector or a one-dimensional array to store an ordered collection of objects. The difference between the two types of storage is that the array allocates storage for a fixed number of elements where as the Vector can grow dynamically. Another difference is that an array can be used to store primitives (int, boolean, etc.) where as a Vector can only store pure objects. You should also keep in mind that arrays are type-safe. An array can only store objects of a particular class and only objects of that class can be retrieved from it. Assigning that object to a variable of its type requires no explicit casting. For example:
 
SomeObject[] soArray = new SomeObject[10];

// Fill array with some object
for (int i = 0; i < 10; i++)
     soArray[i] = new SomeObject(i);

// Get objects from the array
for (int i = 0; i < 10; i++)
    SomeObject so = soArray[i];
The variable soArray only holds variables of the type
Ajit Sagar
 
Comment and Contribute

 

 

 

 

 


(Maximum characters: 1200). You have 1200 characters left.

 

 

Sitemap
Thanks for your registration, follow us on our social networks to keep up-to-date