Keen & Able Computers Interview Questions and Answers

2 questions solve on paper

Q1. Basic java questions and adv java ,sql,css,html questions
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Q.1 Pattern
1
*2*
**3**
Q. 2
write code to get sub array with max sum from given array.

Q1. Introduction Project Deatails Oops Concept Collection Exception Handling Abstract Class Functional Interface Spring Framework
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Q1. Oops Concepts ,Absrtraction,Polymorphism
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Questions on string and arrays both are moderate level questions on hacherrank type for 20 marks

Q1. Constructor chaining
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Q2. Hasmap and treemap
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Q1. What is the size of an int in Java?
Ans. 
The size of an int in Java is 4 bytes.
• An int in Java is a 32-bit signed integer.

• It can hold values ranging from -2,147,483,648 to 2,147,483,647.

• The size of an int is fixed at 4 bytes on all platforms.
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Q2. The size of an int in Java is 4 bytes (32bits).
Ans. 
Yes, the size of an int in Java is indeed 4 bytes (32 bits).
• An int in Java can hold values ranging from -2,147,483,648 to 2,147,483,647.

• The size of an int can be confirmed using the 'Integer.SIZE' constant in Java.

• Using 'Integer.BYTES' will give the size of an int in bytes.
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Q1. What is the default value of an int in Java?
Ans. 
The default value of an int in Java is 0.
• In Java, when an int variable is declared but not initialized, it is automatically assigned the default value of 0.

• For example, int num; // num is assigned the default value of 0.
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Q2. The default value of an int is 0.
Ans. 
Yes, the default value of an int in Java is 0.
• In Java, when an int variable is declared but not initialized, it will have a default value of 0.

• For example, int num; will have a default value of 0.

• This default value is assigned by the Java Virtual Machine (JVM) when memory is allocated for the variable.
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