Bureau of Justice Statistics Interview Questions and Answers

int is a primitive data type, Int is a class in Kotlin, and Integer is a class in Java.

• int is a primitive data type in Java and Kotlin

• Int is a class in Kotlin that represents a nullable integer

• Integer is a class in Java that wraps an int value and provides utility methods

Heap memory is dynamic memory allocation while stack memory is static memory allocation.

• Heap memory is allocated at runtime while stack memory is allocated at compile time.

• Heap memory is accessed through pointers while stack memory is accessed through variables.

• Heap memory is used for dynamic data structures like linked lists while stack memory is used for function calls and local variables.

• Heap memory is slower than s...read more

Kotlin is a statically typed programming language for modern multiplatform applications.

• Kotlin is interoperable with Java and can be used for Android app development.

• It is concise, expressive, and reduces boilerplate code.

• Kotlin has null safety features that prevent null pointer exceptions.

• It supports functional programming and has coroutines for asynchronous programming.

• Kotlin is officially supported by Google for And

Diamond problem is a multiple inheritance issue where a class inherits from two classes with a common parent.

• Occurs in languages that support multiple inheritance

• Results in ambiguity in method calls

• Can be resolved using virtual inheritance

• Example: Class A -> Class B and Class C -> Class B, Class D inherits from both B and C

Java is not fully object-oriented because it supports primitive data types and has static methods.

• Java has primitive data types like int, float, etc. which are not objects.

• Java allows the use of static methods which do not belong to any object.

• Java does not support multiple inheritance, which is a characteristic of fully object-oriented languages.

• However, Java supports encapsulation, inheritance, and polymorphism, whic...read more