Interested to Buy Any Domain ? << Click Here >> for more details...
where exactly collections are usefull in realtime
- 2 Answers
- 10448 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / kumar
Collections are usefull in those situations where you doesn't know how much data you have to handled, that means size of data not defined. Like there are so many scenario when data dynamically comes from UI or application ( no fixed size defined) then you must use collections to manage and perform diff operations.
| Is This Answer Correct ? | 13 Yes | 1 No |
Answer / suresh
collections are the advanced concept to maintain dynamic data as objects. In real time some times we can't estimate the size of the data and type of the data.so it's better to maintain data as objects through collections.through arrays we can't manage the data because arrays are not auto-grow-able in size.
through collections we can use our required data structures directly. we have different classes for that. in each we have predefined methods to manipulate data in that collection.
Collections are performance wise slow. even though collections provide more features to maintain huge data easily.
| Is This Answer Correct ? | 6 Yes | 0 No |
What are green threads in java?
Can we declare a static variable inside a method?
How to create an instance of a class if the class has private constructor?
Describe the various concepts related to object oriented programming (oop).
Variable of the boolean type is automatically initialized as?
What is protected and friendly?
How do I start learning java?
What is java object name?
Is char a method in java?
Is oracle java 11 free?
What is the finalize method do?
What is the purpose of the main method?
Core Java 
