Dell EMC Java Developer Interview Questions and Answers

Function overloading is when multiple functions have the same name but different parameters. Polymorphism is the ability of an object to take on many forms.

• Function overloading allows multiple functions with the same name but different parameters to be defined.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Function overloading is resolved at compile-time, while polymorp

A simple C program to accept and print a name.

• Use scanf() function to accept the name from the user.

• Use printf() function to print the name on the screen.

As a team lead, address the issue by identifying the root cause and providing support and guidance to improve performance.

• Have a one-on-one meeting with the developer to discuss their challenges and identify the root cause of their performance issues.

• Provide support and guidance to help the developer improve their skills and knowledge.

• Set clear expectations and goals for the developer, and monitor their progress regula...read more

Promises and observables are both used for handling asynchronous operations in JavaScript.

• Promises are objects that represent the eventual completion or failure of an asynchronous operation and allow you to handle the result using then() and catch() methods.

• Observables are a more powerful way of handling asynchronous operations that allow you to subscribe to a stream of data and react to each event as it occurs.

• Observa...read more

Lifecycle hooks are functions that allow you to tap into specific moments in the Angular lifecycle.

• There are eight lifecycle hooks in Angular: ngOnChanges, ngOnInit, ngDoCheck, ngAfterContentInit, ngAfterContentChecked, ngAfterViewInit, ngAfterViewChecked, ngOnDestroy

• ngOnChanges is called when an input property changes

• ngOnInit is called once the component is initialized

• ngDoCheck is called during every change detection ...read more

Inheritance in JavaScript allows objects to inherit properties and methods from other objects.

• Inheritance is achieved through the use of prototypes

• Child objects can access properties and methods of parent objects

• Object.create() and class syntax can be used to create inheritance

• Example: Child.prototype = Object.create(Parent.prototype)

• Example: class Child extends Parent {}