Whats the answer for these Classes and Objects exercise?(Java)

Question

Question 1: Create a class Circle with data types (radius, colors) and methods getRadius (0, getArea().

Question 2: Create a class Car with data types (plateNumber, xLocation, yLocation, speed) and methods

move (), park(), accelerate(). The datatypes xLocation, yLocation will be used for method park(), and

speed datatype will be used for accelerate().

Answer 1

class Circle

{

private double radius;

private double centerX;

private double centerY;

private int colors[];

public double getRadius() {return(radius); }

public double getArea() { return(22.0/7*radius*radius); }

}

class Car

{

private String plateNumber;

private double xLocation;

private double yLocation;

private double speed;

public move() { } //changes (x,y) location

public park() { } // freezes (x,y) location

public accelerate() { } //changes speed

}