1. An abstract class called Pet is defined below:  public abstract class Pet {  private String id; private String name;  private static int count = 0;  public Pet(String name)   {   count++;  id = "P" + count;  this.name = name;  }   public String toString()   {   return "ID: " + id + ", Name: " + name;  }  abstract public void sound(); }  The Cat class is a subclass of the Pet class. The class specifications are given below: • It has a private field named age to record the cat’s age. • The class constructor sets both name and age fields of the cat with the given parameter  values. The field age is set to 0 if the given value is negative.  • It provides an accessor method for the field age.  • It overwrites the toString method to return a string consisting of the cat’s ID, name and age. e.g. ID: P15, Name: Molly, Age: 4 • It prints out "Miaow" in a termina

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1. An abstract class called Pet is defined below: 
public abstract class Pet

private String id;
private String name; 
private static int count = 0;
 public Pet(String name) 
 { 
 count++;
 id = "P" + count;
 this.name = name; 

 public String toString() 
 { 
 return "ID: " + id + ", Name: " + name; 

abstract public void sound();

The Cat class is a subclass of the Pet class. The class specifications are given below:
• It has a private field named age to record the cat’s age.
• The class constructor sets both name and age fields of the cat with the given parameter 
values. The field age is set to 0 if the given value is negative. 
• It provides an accessor method for the field age. 
• It overwrites the toString method to return a string consisting of the cat’s ID, name
and age. e.g.
ID: P15, Name: Molly, Age: 4
• It prints out "Miaow" in a terminal when the method sound is called. 
Define the Cat class in full. 

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