Java Interview Questions

These are some Java interview questions. More questions will be added every week or so.

• Java Interview Question: Describe what happens when an object is created in Java

• Java Interview Question: In Java, You can create a String object as below...
  

• Java Interview Question: What is the advantage of OOP?

• Java Interview Question: What is the difference between an Interface and an Abstract class?...

• Java Interview Question: What is the purpose of garbage collection in Java, and when is it used?...

• Java Interview Question: Describe synchronization in respect to multithreading....

• Java Interview Question: Explain different way of using thread?...
  

• Java Interview Question: What are pass by reference and pass by value?...

• Java Interview Question: What is HashMap and Map?...

• Java Interview Question: Difference between HashMap and HashTable?...

• Java Interview Question: Difference between Vector and ArrayList?...

• Java Interview Question: Difference between Swing and Awt?...

• Java Interview Question: What is the difference between a constructor and a method?...

• Java Interview Question: What is an Iterator?...

• Java Interview Question: State the significance of public, private, protected, default modifiers....

• Java Interview Question: What is an abstract class?...

• Java Interview Question: What is static in java?...

• Java Interview Question: What is final?...

• Data Structures: Teddy Bears Puzzle: the game starts when I give you some bears. You can then give back some bears...

• Data Structures: binary search of the array: Implement the body of the following function using a binary search of the array... 

• Data Structures: JAVA: Suppose that I have the following declarations...

• Data Structures: JAVA: What are the steps to inserting a new item at the head...

• What is the difference between an Interface and an Abstract class?

Solution

• Explain different ways of using thread?

Solution

• What are pass by reference and pass by value? 

Solution

• What is the difference between swing and Awt?

Solution

• What is an Iterator? 

Solution

• What does happen if the main method is declared as private?