JAVA: This is a very easy problem:

You MUST use a foreach loop to iterate throughthe list. You may have to adjust othermethods in class PolymorphismPractice but I onlyneed help on STEP 3, the getInfo method.

QUESTION:

Let’s complete the getInfo method. Start by editing this methodheader for getInfo so that takes in an ArrayList of Shape objectsas a parameter. Now we will be iterating over the list and addinginformation to a StringBuilder. For this method use a foreach loopto iterate through the list. For each shape in the array, add theshape information to your StringBuilder HINT: use the toStringmethod for that Object.

Let’s also add the lines “Has area: the area of theshape”, as well as “Has circumference: the circumferenceof the shape”. Please make sure that the area andcircumference found are rounded to two decimal places. Separateevery object with a new line character. Finally, return the Stringof all the information found.

An example of how this should look whenprinted:

Circle with radius: 70.84, Centered at X: 69.27 Y: 89.29Has area: 15764.34Has circumference: 445.08Rectangle with height: 9.34 and width: 70.01, Centered at X: 9.69 Y: 84.71Has area: 654.07Has circumference: 158.70

Testing

Call and print the getInfo method inside your main method.

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CODE TO COPY:

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abstract class Shape{    public double x;    public double y;    abstract double calculateArea();    abstract double calculateCircumference();    public double getX() {        return x;    }    public double getY() {        return y;    }    public void setX(double x) {        this.x = x;    }    public void setY(double y) {        this.y = y;    }}

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public class Circle extends Shape {    public double radius;    public Circle(double radius, double X, double Y){        this.radius = radius;        this.setX(X);        this.setY(Y);    }    public double getRadius() {        return radius;    }    public void setRadius(double radius) {        this.radius = radius;    }    public double calculateArea(){        return (Math.PI * radius * radius);    }    public double calculateCircumference(){        return (2 * Math.PI * radius);    }    public String toString() {        return String.format("Circle with radius: %.2f, Centered at X: %.2f Y: %.2f%n",                this.getRadius(), this.getX(), this.getY());    }}

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public class Rectangle extends Shape {    public double height;    public double width;    public double getHeight() {        return height;    }    public double getWidth() {        return width;    }    public void setHeight(double height) {        this.height = height;    }    public void setWidth(double width) {        this.width = width;    }    public Rectangle(double height, double width, double X, double Y){        this.height = height;        this.width = width;        this.setX(X);        this.setY(Y);    }    public double calculateArea(){        return (height*width);    }    public double calculateCircumference(){        return (height*2) + (width*2);    }    public String toString() {        return String.format("Rectangle with height: %.2f and width: %.2f, " +                        "Centered at X: %.2f Y: %.2f%n",                this.getHeight(), this.getWidth(), this.getX(), this.getY());    }}

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CODE TO EDIT: STEP 3 (getInfo method) using a foreach loop

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import java.util.ArrayList;public class PolymorphismPractice {    public static void main(String[] args) {        //Step 1 Initialize an Array list of type Shape        ArrayList aList = new ArrayList<>();        //Step 2 initialize the ArrayList with 5 circles and squares (10 total) with        //random X and Y values and random length width        //Hint You can make this easier using a for loop, also try using Math.random()        //Let’s now fill the ArrayList with 5 Circles and 5 Rectangles (for a total of 10 objects).        //A for loop is definitely helpful in this step, and also consider using Math.random().        for (int i = 0; i < 10; i++) {            Shape shape;            if (i % 2 == 0) {                double radius = Math.random();                double x = Math.random();                double y = Math.random();                shape = new Circle(radius, x, y);            } else {                double height = Math.random();                double width = Math.random();                double x = Math.random();                double y = Math.random();                shape = new Rectangle(height, width, x, y);            }            aList.add(shape);        }        //To test this step, you can use the ArrayList size() method to make sure it has a size of 10,        //or try printing out all 10 items in the ArrayList.        //Test your methods here!        for (int i = 0; i < aList.size(); i++) {            System.out.println(aList.get(i));        }        System.out.println(findCircles(aList));        System.out.println(getInfo(aList));    }    //Step 3 complete getInfo method as shown in instructions    public static String getInfo(ArrayList list) {        StringBuilder sb = new StringBuilder();                //add your code here    }    //Step 4 complete findCircles method as shown in instructions    //Let’s now complete the findCircles method.    //Start by editing this method header for findCircles so that it takes in an ArrayList of Shape objects as a parameter.    //Now, using another for each loop, and the instanceof keyword add the information of ONLY Circles to a StringBuilder    //(make sure every Circle Object’s info is separated by a new line).    //HINT use the toString method    //Finally return a string holding all of the different Circle’s information.    public static String findCircles(ArrayList list) {        StringBuilder strbldr = new StringBuilder();        list.forEach((shape) -> {                    if (shape instanceof Circle) {                        strbldr.append(shape).append("");                    }                }        );        return strbldr.toString();    }}

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