Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

system.out.println(1 + 3);

8 11786

posted in online test

1 3382

if am have 100 threads(for ex:T1,T2---T100) how we give priority to these threads and how the system excute these threads

2 5090

What is the multilevel inheritance. and also give the Example of it ?

5 9987

Can Anybody tell the diff b/w jdk1.6 and latest version.

2 4613

why java does compile time polymorphism at run time ?

CTS, TCS,

6 15411

what is the use of clone() in real time scenario?

Quinnox,

2 17801

what is the use of thread?Justify it by project point of view

7 9024

why java does not contain pointers?

Infosys, TCS,

13 17871

can we write program without class

TCS,

6 11473

I want to run a simple hello world java (HelloWorld.java) program using a batch file. How can i run it and how to construct a batch file.

Infosys,

1 9018

what is AWT

3 5862

What happens when a class is made static like if a field or member is made static it becomes class variable and is shared by all the object of the class?

1 3587

how to accept integer array in java

Tech Guru,

2 5051

how to print hello world every second till i have pressed enter key ???

SAP Labs,

1 6997

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Un-Answered Questions { Core Java }

What are different types of inner classes ?

1105

What must a class do to implement an interface in java programming?

1141

How do you use nextline in java?

1027

how to create constants in java?

1129

What are the methods of object class ?

1105

What is the difference between numeric and integer?

1060

What is JDBC Driver interface?How can you retrieve data from the ResultSet

2156

In how many ways we can do synchronization in java?

1013

What do you understand by soft reference?

1103

What is the purpose of void class?

1113

What is the purpose of the finalize() method?

1308

How do you make an arraylist empty in java?

989

Why chararray() is preferred over string to store the password?

1075

What is java and its types?

1173

What is downcasting?

1214

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