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

Core Java Interview Questions

Questions Answers Views Company eMail

Which class is the immediate superclass of the Container class?

1 7338

Name the immediate superclass of the MenuComponent class?

1 4928

To obtain design information about an object, which class in used?

1 4837

Which containers may have a MenuBar?

1 5615

In what type of containers, Border layout is a default layout?

3 7332

Which containers use a FlowLayout as their default layout?

3 8488

Which java.util classes and interfaces support event handling?

2 12668

To set the position and size of a component, which methods are used?

3 10974

What are the allowed, non-Unicode letter characters that can be used as the first character of an identifier?

2 5297

Name the package that always imported by default?

4 13485

Who developed JScript language?

3 6862

Is Java is 100% pure OOPS? Explain?

ANZ,

27 42459

Why are the methods of the Math class are static?

1 8973

Does Java support multiple Inheritance?

12 22347

What are null interfaces? Give some examples?

2 8203

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Un-Answered Questions { Core Java }

What is java string pool?

1068

What is an object in java and how is it created?

1110

What is the difference between break and continue statements?

1107

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

1021

Differentiate between static and non-static methods in java.

1106

What is a classloader in java?

1072

Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2649

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

1112

What is a constructor overloading in java?

1113

Realized?

2239

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

1071

What is parsing in java?

1022

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

1053

Is minecraft 1.15 out?

1024

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

1085

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