Write a tester program to test the mobile class defined below. Create the class named with your id (for example: Id12345678) with the main method. Create two mobiles M1 and M2 using the first constructor. Print the characteristics of M1 and M2. Create one mobile M3 using the second constructor. Change the id and brand of the mobile M3. Print the id of M3.

Java Use eclipse for this exercise. Create a class for pets. There should be fields for name, name of owner, species (dog, cat, etc.), breed (basset hound, domestic shorthair, etc.), age (a double), and weight (a double). Create a default constructor that does nothing and a constructor that will initialize all fields using values passed in as parms. Create a method isSpecies which has one parm, a String. Return true if the species in this is the same as the parm, otherwise return false. For example, if the parm is "hamster", then the method will return true if this is a hamster, and will return false if it's not. Create a toString method that returns a String containing all fields. You can create a multi-line String by including newlines; make sure the String is nicely formatted. Do NOT create any set or get methods. Client/demo/driver code (in a separate class): Write a method to read Pets from a file. The method will have one parm which is an array of Pets. The input file is named…

Write a Rectangle class. Its constructor should accept length and width as a parameter. It should have methods that return its length, width, perimeter, and area. (Use Java) Show a demonstration where you create two separate rectangles.

In Java, Create a class Rectangle with double attributes length and width. The default constructor should set these attributes to 1. Provide methods that calculate the rectangle's perimeter and area, as well as accessors and mutators for both data fields. The mutator methods for length and width should verify that the number being passed in is larger than 0.0 and less than 20.0 -- if it doesn't fit those criteria, the value of the field should not be changed.Write a Driver class in the same file to test your Rectangle class. It should prompt the user to enter a length and width of a rectangle, and then print out the area and perimeter of the rectangle. (Use the mutators to set the length and width of the rectangle, not the constructor.)