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

Core Java Interview Questions

Questions Answers Views Company eMail

Can we declare Pointer in Java?

5 2078

What is the default value stored in Local Variables?

5 1864

Difference in the use of print, println, and printf.

5 1642

Is it possible to make an array volatile?

4 1791

What is an object-oriented paradigm?

5 1895

What are the Memory Allocations available in JavaJava?

1 891

What is a singleton class in Java? And How to implement a singleton class?

2 1092

Can you explain the Java thread lifecycle?

1 1071

In the below Java Program, how many objects are eligible for garbage collection?

1 1207

What is JDK? Mention the variants of JDK?

1 1083

What are Brief Access Specifiers and Types of Access Specifiers?

1 983

Explain Method Overloading in Java.

1 1167

Give a briefing on the life cycle of a thread.

1 1024

Brief the life cycle of an applet.

1 898

What are the observer and observable classes?

1 1226

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Un-Answered Questions { Core Java }

How to sort array in descending order in java?

1005

Write a program to find the whether a number is an Armstrong number or not?

1110

What is the difference between break and continue statements?

1135

What is java string pool?

1091

What is the difference between equals() and == in java?

1050

explain different ways of using thread? : Java thread

1092

Realized?

2278

Is minecraft 1.15 out?

1056

What is parsing in java?

1052

What is a classloader in java?

1101

Write a program to print count of empty strings in java 8?

1096

What do you mean by an interface in java?

1110

What is a constructor overloading in java?

1136

What are the differences between heap and stack memory in java?

1153

Explain public static void main(string args[]) in java.

1089

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