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 are the differences between constructor and method of a class in Java?

1 1018

How do you use final keywords and final variables in Java?

2 770

In Java, what types of classes perform inheritance?

2 837

What types of inheritance does Java support?

2 800

What is Java exception handling?

1 740

What are the differences between unchecked exception, checked exception, and errors?

2 994

What are the types of loops in Java, and how are they used?

2 767

How do you declare an infinite loop?

2 876

What is the difference between the continue and break statement?

2 812

What is the entry point in Java, and how is it written?

2 847

In Java, what are public static void main string args?

2 835

In Java, what’s the purpose of static methods and static variables?

2 818

How do you use, call, and access a static method in Java?

2 862

How do you use, call, and access a non-static method in Java?

2 798

In Java, what are this() and super(), and where are you required to use them?

2 785

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Un-Answered Questions { Core Java }

when a request is generated from apache tomcat 5.5 and goes to oracle 10g or mysql,,, how the oracle or mysql reads the request as apache is a web server and oracle 10g is application server? when the oracle 10g provides response, how the apche tomcat reads it???

2162

Can java program run without jre?

1010

What is the syntax and characteristics of a lambda expression?

1045

Define an enumeration?

1045

What does function identity () do?

964

What happens if an exception is throws from an object's constructor?

1133

What is a function easy definition?

1012

What are the steps that are followed when two computers connect through tcp?

992

What does main method?

979

How is a structure different from array ?

1045

What language is java written?

1018

Why do we need data structure in java?

1071

If I only change the return type, does the method become overloaded?

926

Are arrays classes in java?

1036

What are different ways of object creation in java ?

1078

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