Difference between Hash Table and Hash Map?
- 10 Answers
- 19559 Views
- Persistent, I also Faced
- E-Mail Answers
Answer Posted / santosh nayak
HashMap hm=new HashMap();
hm.put("s","s");
hm.put("a","a");
hm.put(null,"r");
hm.put(null,"t");
hm.put("e","e");
This is the code where we can allow multiple null key values
in HashMap.
| Is This Answer Correct ? | 1 Yes | 12 No |
Post New Answer View All Answers
How do you override a private method in java?
Where will it be used?
Can a method inside a interface be declared as final?
what is meant by Garbage collection?
what is encapsulation in java? Explain
What are green threads in java?
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)
Where is the find and replace?
What are the different approaches to implement a function to generate a random number?
What are some alternatives to inheritance?
What is a copy constructor in java?
What is the Difference between Final Class && Abstract Class?
a thread is runnable, how does that work? : Java thread
Does java initialize arrays to zero?
What does bitwise or mean?
