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

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Java Related Interview Questions

Questions Answers Views Company eMail

Why is String immutable?

Atos Origin,

1062

What is a local block?

Global Logic,

1141

What do you mean by exception handling in Java?

Atos Origin,

1295

What are dot operator queries?

Atos Origin,

1104

What are annotations in java?

Impetus,

1095

What is the use of a copy constructor?

Flextronics,

992

How we can declare a static variable?

HCL,

1110

Write a function to print Fibonacci series and Tribonacci series?

Hexaware,

1184

How we create object in copy constructor?

HCL,

1124

Do we need to manually write Copy Constructor?

HCL,

1033

Why declare Main() inside the class in java ?

HCL,

1062

What is the use of using enum to declare a constant?

Fidelity,

1029

What is scope & storage allocation of static, local and register variables? Explain with an example.

IBS,

1014

How will you reverse a link list without using recursion?

Global Logic,

1033

What is meant by stack and queue?

GrapeCity,

1070

Un-Answered Questions { Java Related }

I installed a new application, what do I need to do before I can access it from the web server url?

863

When do we need to use internal iteration? When do we need to use external iteration?

1125

What configuration changes are required to use resource files in Struts?

1031

Can we execute a program without main() method?

1037

What is front controller in struts2?

1084

What is the similarity between dynamic binding and linking?

1122

How can I get or redirect the log used by DriverManager and JDBC drivers?

935

Is jms a message broker?

892

What is container-managed persistence?

1028

What are the differences between stringbuffer and stringbuilder?

1059

Write a program for the problem: the array of inetegers indicating the marks of the students is given, U have to calculate the percentile of the students aaccording to this rule: the percentile of a student is the %of no of student having marks less then him. For eg: suppose Student Marks A 12 B 60 C 80 D 71 E 30 F 45 percentile of C = 5/5 *100 = 100 (out of 5 students 5 are having marks less then him) percentile of B = 3/5*100 = 60% (out of 5, 3 have markses less then him) percentile of A = 0/5*100 = 0%.

2186

What are the main classes of the list interfaces? : java collections

1032

What are the ddl statements?

856

How jndi is related to jms?

935

What do you mean by singleton class in java?

910

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