JAVA

// GeometricObject.java: The abstract GeometricObject class

public abstract class GeometricObject {

private String color = "white";

private boolean filled;

/**Default construct*/

protected GeometricObject() {

}

/**Construct a geometric object*/

protected GeometricObject(String color, boolean filled) {

this.color = color;

this.filled = filled;

}

/**Getter method for color*/

public String getColor() {

return color;

}

/**Setter method for color*/

public void setColor(String color) {

this.color = color;

}

/**Getter method for filled. Since filled is boolean,

so, the get method name is isFilled*/

public boolean isFilled() {

return filled;

}

/**Setter method for filled*/

public void setFilled(boolean filled) {

this.filled = filled;

}

/**Abstract method findArea*/

public abstract double getArea();

/**Abstract method getPerimeter*/

public abstract double getPerimeter();

}

13.1 (Triangle class) Design a new Triangle class that extends the abstract GeometricObject class. Draw the UML diagram for the classes Triangle and GeometricObject then implement the Triangle class. Write a test program that prompts the user to enter three sides of the triangle, a color, and a Boolean value to indicate whether the triangle is filled. The program should create a Tri- angle object with these sides, and set the color and filled properties using the input. The program should display the area, perimeter, color, and true or false to indicate whether it is filled or not