What is a virtual keyword in Java?
In Java, the virtual keyword is used to refer to methods that can be overridden or substituted by subclasses. The virtual keyword does not work for private methods.
Why is Java used as a programming language for game development?
Java is used as a programming language for game development because it offers a number of advantages for game developers. It is a reliable, platform-independent, secure and object-oriented language, meaning code is easier to maintain, reuse and debug. Java also provides a powerful set of APIs, a rapidly growing gaming library and an increasing selection of game engines, making it easier for developers to create and deploy games. Additionally, Java is a widely used language, which makes it easier for game developers to find resources, tools and people with expertise in the language.
1. Chaining multiple methods together
2. Destructuring properties from objects
3. Using multiple parameters in a single function definition
4. Ternary operator
5. Shorthand for assignments
6. Arrow function expression
7. Template literals
8. Shorthand for loops
What is an observable class in Java?
An observable class in Java is a class that provides support for publishing and subscribing to events, similar to the observer design pattern. This means that any class that implements the Observable class can send out and receive notifications regarding events that occur within its system. The Observable class is a part of the java.util package.
What is the random class in Java?
The Random class in Java is a class used to generate random numbers. It includes methods for generating both pseudorandom numbers and true random numbers. It can be used to generate numbers in various ranges, such as ints, doubles, floats, and longs. This class is used in many applications involving random data.
var img = new Image();
img.src = "yourImage.jpg";
The above code creates a new image object, sets the image source as yourImage.jpg, and then appends the image to the current document's body.
A return statement is an instruction in a function that tells the program to finish executing the function and return a given value or constant. This is used when you need to pass a value from one function to another or when you want a function to process some data and return a result. Return statements are written by writing the keyword 'return' followed by the value or constant to be returned.