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

Core Java Interview Questions

Questions Answers Views Company eMail

Explain about java sdk?

1053

What is meant by javabeans?

1110

Explain the reason behind ending a program with a system.exit(0)?

1098

Explain about class in java?

1126

What is bean? Where it can be used?

1107

Have you ever used hashtable and dictionary?

1036

What is the exact difference in between unicast and multicast object? Where we will use?

1010

When is update method called?

1158

Say any two properties in beans?

1075

In a container there are 5 components. I want to display the all the components names, how will you do that one?

1058

Considering notepad/ie or any other thing as process, what will happen if you start notepad or ie 3 times? Where 3 processes are started or 3 threads are started?

1171

State some advantages of java?

1261

How does thread synchronization occurs inside a monitor?

1131

Explain about the interpreter in java?

1071

What is the difference between menuitem and checkboxmenu item?

1353

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Un-Answered Questions { Core Java }

What are the states of thread in java?

1007

What is mysql driver class name?

1161

Explain notify() method of object class ?

1124

Define reflection.

1010

What is the purpose of final keyword and when to use it?

1017

Name some classes present in java.util.regex package.

1050

What is a default constructor and also define copy contrucyor?

1122

What is qualitative variable?

945

What does it mean that a class or member is final?

1011

Can we catch more than one exception in single catch block?

1068

What is the equal sign?

1139

Why is string buffer better than string ?

1139

Can we sort hashmap in java?

971

What is callablestatement? How you can call stored procedure to pass in parameter?

1039

Does java have extension methods?

997

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