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 18315

When we will use an Interface and Abstract class?

9 25510

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

3 5097

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

1 6159

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

Wipro,

11 27211

Where the CardLayout is used?

1 6806

Which Component subclass is used for drawing and painting?

1 2922

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

1 4485

Which Java operator is right associative?

3 7021

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

2 4665

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

1 4174

In what types of operations an ArithmeticException will be thrown?

3 5534

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

2 4140

Which class has no duplicate elements?

8 13533

Which class is extended by all other classes?

4 8962

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is string value?

634

What is bubble sorting in java?

591

Java is pass by value or pass by reference? Explain

530

What is the parse method in java?

561

Why java is called not pure object oriented language?

575

What is map and hashmap in java?

616

What is the difference between length and size in java?

493

Is singleton class thread safe?

531

What is the use of java?

526

What is an off by one error in java?

496

How do you calculate square roots?

572

Why null value is used in string?

521

What is a static class in java?

552

What is update method called?

660

What are the changes in java.io in java 8 ?

549

For More Un-Answered { Core Java } Questions Click Here