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.
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