How do you write a Square class in Java?

How do you write a Square class in Java?

Create a class called Square that takes a width parameter in the constructor. The Square class should have a draw() method that will draw the square on the screen. Create a class called TestSquare that will take width from the user, create an object of Square, and invoke the draw() method on the square object.

How do you draw a Square shape in Java?

To draw a square we need to know that:

  1. A square has a width and a height, both are equal size.
  2. The way to draw a square in Swing is with drawRect(x, y, width, height) draw(Shape) of the Graphics2D method where Shape would be an instance of Rectangle2D.

Should Square extend Rectangle?

Correct answer: We know that a square really is just a subclass of a rectangle, for it is merely a rectangle having four sides that are all equal. Using inheritance, you can very easily reuse much of your Rectangle code. First, you need to extend the Rectangle class: public class Square extends Rectangle { . . .

Can a Square inherit from a Rectangle?

Since the Square inherits from the Rectangle, it is possible to access the inherited attributes, such as width.

How do you make a rectangle in Java?

In Java, to draw a rectangle (outlines) onto the current graphics context, we can use the following methods provided by the Graphics/Graphics2D class: drawRect(int x, int y, int width, int height) draw3DRect(int x, int y, int width, int height, boolean raised) draw(Rectangle2D)

How do you square a number in Java?

How to square a number in Java?

  1. int X = 3; int S = X * X; System.out.println(“The square of ” + X + ” is ” + S); // The square of 3 is 9.
  2. public static double pow(double base, double exponent);
  3. int X = 3; double S = Math.pow(X, 2); System.out.println(“The square of ” + X + ” is ” + S); // The square of 3 is 9.0.

How do I create a square pattern in JavaScript?

  1. // Square star pattern in JavaScript.
  2. let numberSquare = 5;
  3. let stringSquare = ”;
  4. for(let i=1; i<=numberSquare; i++){
  5. for(let j=1; j<=numberSquare; j++){
  6. stringSquare += ‘*’;
  7. }
  8. stringSquare += ‘\n’;

How do you program a rectangle in Java?

Java Program

  1. public class rectangle{
  2. public static void main(String args[])
  3. {
  4. int width=5;
  5. int height=10;
  6. int area=width*height;
  7. System.out.println(“Area of rectangle=”+area);
  8. }

How is inheritance defined in Java?

Inheritance is a mechanism wherein a new class is derived from an existing class. In Java, classes may inherit or acquire the properties and methods of other classes. A class derived from another class is called a subclass, whereas the class from which a subclass is derived is called a superclass.

Is square a subtype of Rectangle?

The answer depends on mutability. If your rectangle and square classes are immutable, then Square is really a subtype of Rectangle and it’s perfectly OK to derive first from second.

How do you make a box in Java?

How do you print a box in Java?

Step 1: Input number of rows and columns. Step 2: For rows of rectangle run the outer loop from 1 to rows. Step 3: For the column of the rectangle run the inner loop from 1 to columns. Step 4: Print star for first or last row or for first or last column, otherwise print blank space.