P2P SYSTEM Salesforce Developer Interview Questions and Answers

Encapsulation is the process of hiding implementation details and providing access to only necessary information.

• Encapsulation helps in achieving data abstraction and information hiding.

• It allows for better control over data and prevents unauthorized access.

• In Java, encapsulation is achieved through the use of access modifiers such as private, public, and protected.

• For example, a class may have private variables that c...read more

A string is a sequence of characters used to represent text in programming.

• Strings are often used for storing and manipulating text data.

• In Java, strings are represented by the String class.

• Strings can be concatenated using the + operator.

• Strings are immutable, meaning they cannot be changed once created.

• Examples of string literals include "hello world" and "42".

Strong OOPS concept is essential for Java developers to write efficient and maintainable code.

• Understanding of classes, objects, inheritance, polymorphism, and encapsulation

• Ability to design and implement complex systems using OOPS principles

• Experience with design patterns and SOLID principles

• Knowledge of interfaces, abstract classes, and access modifiers

• Familiarity with UML diagrams for modeling software systems