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

Core Java Interview Questions

Questions Answers Views Company eMail

What is the use of collections in java? How it is implemented in real time applications?

2 12588

1.) if we use "private" in place of "public" in public static void main()... 2.) if we use "int" in place of "void".... 3.) can we ommit "static" keyword from that statement.... 4.) also can we give the command line arguments type as int type or float,etc.(.i.e (string args[]))

1 6717

WHAT IS THE SCOPE FOR COREJAVA...? IS JAVA ONLY CORE JAVA ?

2 9711

difference between jsp and java script?

3 5787

When you declare a method as abstract method ?

HP,

2 7035

What is JVM ?

Phantom Technologies, TCS,

4 7290

Why do we need public static void main(String args[]) method in Java...?

1 5140

What is the difference between constructor and method?

4 6778

What is the difference between parameters and arguments ?

2 5481

What is the difference between Java Bean and Java Class.?

2 5450

What is the purpose of a statement block?

1 4432

Can an unreachable object become reachable again?

3 5716

String Reverse in Java...!

5 8973

what difference between throw and throws in exception handling.

5 8297

How to excute - Interface - Inner class- method can any one tell how to execute/ call this main method public interface abc { static int i=0; void dd(); class a1 { a1() { int j; System.out.println("inside"); }; public static void main(String a1[]) { System.out.println("in interfia"); } } }

1 4045

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Un-Answered Questions { Core Java }

what is the difference between process and thread? : Java thread

996

Define interface in java?

1086

Why do we use return statement?

1046

Can a method be overloaded based on different return type but same argument type?

970

Is void a wrapper class?

952

What is a short in java?

1049

Explain the difference between abstract classes and interfaces in java?

1186

Give me some null interfaces in java?

1060

How is garbage collection controlled?

1171

What is variable argument in java?

1011

What is comparator in java?

1004

What is a blocking method in Java?

1249

What do you mean by aggregation?

1323

What are unchecked exceptions in java?

1043

how to run ecllipse with jettyserver for windows environment using batch file

2091

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