Let's explore how to create a Java class object in Kotlin. To do this, create a Shape.java file with three properties: height, width, and name with getters and setters:

public class Shape {

    private int width;
    private int height;
    public static final double PI = 3.1415;
    private final String name;

    public Shape(int width, int height, String name) {
        this.width = width;
        this.height = height;
        this.name = name;
    }
    public final int getHeight() {
        return this.height;
    }

    public final void setHeight(int value) {
        this.height = value;
    }

    public final String getName() {
        return this.name;
    }
    public final void shapeMessage() {
        System.out.println("Hi i am " + this.name + ", how are you doing");
    }
}

Creating an instance of the Java class in Kotlin is similar to creating an instance of the Kotlin class. See the following example:

val shape = Shape(5,10,"Square")

shape is an instance of the Shape class, which can access functions and update the class properties:

shape.shapeMessage()
shape.height = 10
println("name ${shape.name} height = ${shape.height}")