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Core Java Interview Questions
Questions Answers Views Company eMail

What is Vector?Can you elaborate how Vector is Thread safe?

HCL,

3 12015

How to solve the problem of generating the unique hash keys with hash function?

1 1972

long d =10;int i =0;i=d; /// is this possible? If d is very long number (10 digits or some thing) then?

3 7019

How can we achieve IPC in JAVA?

Wipro,

1 3174

What do you mean by Remote procedure call?

2 5882

Have you worked on bits programming? examples?What is bit? How many bits are there in the byte?

1 4272

What is left shift and right shift?

1 5904

How GC (Garbage Collector) knows the objects reference is unused.Whether GC removes the unused object Parmanently or it maintains something.

2 7405

Why all programming languages have main as a execution starting point?

4 9328

what is private constructor?what are the uses of writing private constructor in our program?

10 22164

What is a thin-client application?

Adobe,

5 33656

What is a J2EE component? List out all the component?

Adobe,

2 31829

What advantage does an entity bean have over a sessin bean?

Adobe,

3 33042

Why would you desing a J2EE application so user data is entered by way of a JSP page and managed by an underlying Java Beans class?

Adobe,

5 22994

Why Java is a platform independent language?

Wipro, Zensar,

6 70331


Post New Core Java Questions

Un-Answered Questions { Core Java }

What is the difference between equals() and == in java?

1023


What is parsing in java?

1022


What is a classloader in java?

1072


Differentiate between static and non-static methods in java.

1106


What do you mean by an interface in java?

1084


Is minecraft 1.15 out?

1024


How to create a base64 decoder in java8?

1119


Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2651


Write a program to find the whether a number is an Armstrong number or not?

1085


What is the difference between break and continue statements?

1107


How to sort array in descending order in java?

976


explain different ways of using thread? : Java thread

1068


Explain public static void main(string args[]) in java.

1053


What is a constructor overloading in java?

1115


What is an object in java and how is it created?

1110