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Core Java Interview Questions
Questions Answers Views Company eMail

What is update method and when it is called?

TCS,

2 16967

When we will use an Interface and Abstract class?

9 23421

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

3 4048

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

1 5454

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

Wipro,

11 23531

Where the CardLayout is used?

1 5822

Which Component subclass is used for drawing and painting?

1 2067

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

1 3552

Which Java operator is right associative?

3 5591

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

2 3839

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

1 3352

In what types of operations an ArithmeticException will be thrown?

3 4532

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

2 3344

Which class has no duplicate elements?

8 11364

Which class is extended by all other classes?

4 7561


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Un-Answered Questions { Core Java }

Which class is the superclass of all classes?

188


Can you declare the main method as final?

127


can java object be locked down for exclusive use by a given thread? : Java thread

144


What is meant by javabeans?

177


Can java run on google chrome?

118






What are namespaces in java?

100


Explain parallel processing in java8?

145


What is serialization in java?

135


Write a program to find the greatest of three numbers in java?

136


Why do we need data serialization?

115


Java.util.regex consists of which classes?

139


Is arraylist an object in java?

92


Can java arraylist hold different types?

96


What is keyword auto for?

150


What is the common usage of serialization? What exceptions occur during serialization?

141