| Other Core Java Interview Questions |
| |
| Question | Asked @ | Answers |
| |
| How to perform Singleton of the java class object on multi
JVM? | | 1 |
| What is garbage collection in Java, and how can it be used ? | Wipro | 10 |
| can we create a instance for intwerface? | | 3 |
| which class to use when concatenating
strings in a loop. | IBM | 2 |
| What is the difference between Stream Reader and Stream Writer? | | 4 |
| What are teh sub-classes of a component class? | | 2 |
| Difference between array and arraylist. | Sai-Softech | 4 |
| What is serializable interface? | Infosys | 8 |
| How will you create the class for the following scenario?
Employees under one employee?
| Bally-Technologies | 2 |
| why String class is immutable. | iGate | 3 |
| what is java bean?where can we use it? | TCS | 3 |
| String is a immutable objects . it means that string does
not change...........
But it will be chang.........
{
String s="kapil";
String s1="raj";
String s=s1;
then print(.......)
The String has been changed ..
how it is possible and why its called immutable objects | | 3 |
| Name the package that always imported by default? | | 2 |
| when,where and how to use abstract class and interface | | 2 |
| Difference between Superclass and Subclass? | | 2 |
| what is the difference between HashMap And HashTable? | Hexaware | 3 |
| What is the difference between throw and throws? | | 5 |
| What are Encapsulation, Polymorphism and Inheritance? | | 2 |
| Java violates few objected oriented concepts. Can you
explain in what way? | Ness-Technologies | 3 |
| how can you retrive information from database by using
hashmap/arraylist ,plz explain with example briefly? | Satyam | 1 |
| |
| For more Core Java Interview Questions Click Here |
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