How can you say HashMap is syncronized?
- 14 Answers
- 16494 Views
- Arete, IBM, I also Faced
- E-Mail Answers
Answer Posted / rajender
i agree with 3,4,5,6,7 answers .hashmap is not syncronized
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Say you want to store the information about a number of pets in an array. Typical information that you could store for each pet (where relevant) would be • Breed of animal • Animal's name • Its birth date • Its sex • Whether it has been sterilised or not • When it is due for its next inoculation • When it last had its wings clipped For each type of pet (eg. dog, cat or bird) you would typically define a class to hold the relevant data. Note: You do not need to implement these classes. Just answer the following questions. 3.1.1 What would be the advantage of creating a superclass (eg. Pet) and declaring an array of Pet objects over simply using an array of Objects, storing each of the instances of the different pet classes (eg. Dog, Cat or Bird) in it? 3.1.2 Would you define Pet as a class or as an interface? Why? (2) (2)
What is the final keyword?
What do you understand by casting in java language?
In the below example, how many string objects are created?
What does it mean to be immutable?
Why java uses the concept of the string literal?
Why method overriding is used?
Explain try and catch keywords in java?
Is there any case when finally will not be executed?
Mention a package that is used for linked list class in java.
What is a copy constructor in java?
I want to persist data of objects for later use. What’s the best approach to do so?
Can bool be null?
Why does java have different data types for integers and floating-point values?
How are the elements of a gridbaglayout organized?
