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 update method and when it is called?

TCS,

2 19358

When we will use an Interface and Abstract class?

9 28485

While opening the file, what type of exceptions can be caught?

3 6219

What methods are called, When we navigate from one applet to another applet?

1 7160

How 'java' got its name and what it stands for?

Wipro,

11 31789

Where the CardLayout is used?

1 7690

Which Component subclass is used for drawing and painting?

1 3652

Name the method of a Container that can be used to cause a container to be laid out and redisplayed?

1 5230

Which Java operator is right associative?

3 8365

What is the method used to get the absolute value of a number?

2 5665

Name the method that is used to set a TextComponent to the read-only state?

1 4956

In what types of operations an ArithmeticException will be thrown?

3 6753

Which characters are allowed to use as the second character of an identifier, and which characters are not allowed?

2 5241

Which class has no duplicate elements?

8 16279

Which class is extended by all other classes?

4 10356

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Un-Answered Questions { Core Java }

Is hashset ordered?

1082

List the features of java programming language.

1070

What is t in generics in java?

1088

Can a class extend 2 classes in java?

1054

How can you read content from file in java?

1020

Define packages in java?

1018

What are predicates in java 8?

1034

State the main difference between c++ and java?

1104

Is it safe to install java on my computer?

1161

What is the protected method modifier?

1060

What are the principle concepts of oops?

982

How do you sort arraylist in descending order?

1035

What is parsing a string?

1187

What is the difference between dom and sax parser in java?

995

Explain the importance of finalize() method.

981

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