KRAN Consulting Java Developer Interview Questions and Answers

Q1. What is interface ?
Ans. 
An interface in software development defines a contract for classes to implement, specifying methods and properties.
• Interfaces in programming languages like Java and C# allow for multiple inheritance by defining a set of methods that a class must implement.

• Interfaces provide a way to achieve abstraction and polymorphism in object-oriented programming.

• Interfaces are used to define common behavior that multiple classes c...read more
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Q2. Hat is encapsulation
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• It allows for better control over the data by preventing direct access from outside the class.

• Encapsulation promotes code reusability and makes the code easier to maintain.

• Example: In a class representing a car, the variables lik...read more
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Apttitude and Basic of CPP

Q1. String reverse program
Ans. 
A program to reverse a string in Java.
• Use StringBuilder class to reverse the string.

• Convert the string to a StringBuilder object, call reverse() method, and convert back to string.

• Example: String str = "hello"; StringBuilder sb = new StringBuilder(str); sb.reverse(); String reversed = sb.toString();
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Q2. Logical questions
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Q3. Project Information
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10 apti questions and 10 technical mcq on cpp

Q1. Oops concept question
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Q2. Sql queries on join
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Oops topic and aptitude

Easy

Q1. Tell me about yourself Why you choose IT & developer role OOPs concept, sample Java program
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Q1. Personal and salary details.
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The aptitude test mainly covered logical reasoning, quantitative aptitude, and basic programming concepts. Questions were of moderate difficulty, with some time-based problem-solving challenges. Practicing common aptitude topics like puzzles, numerical ability, and coding fundamentals can help in preparation.

The group discussion round focused on general topics related to technology, current affairs, and workplace scenarios. The evaluators were looking for clarity of thought, communication skills, and how well candidates could present their points while engaging with others. Staying confident and actively participating helped in getting selected.

Very easy roundand is it a program to implement Parallel Merge Sort and can measure the performance

Coding and decoding reasoning for the shield season is over now I am not sure