Class demonstration

Pet.java

public class Pet 
{
    private String name;
    private int age;
    private double weight;
    
    public void writeOutput()
    {
        System.out.println("This is a pet named " + this.name + 
                            "who is " + this.age + 
                            "years old and weighs " + this.weight);
    }
    
    public void setPet(String newName, int newAge, double newWeight)
    {
        this.age = newAge;
        this.name = newName;
        this.weight = newWeight;
    }
    
    public void setName(String newName)
    {
        this.name = newName;
    }
    
    public void setAge(int newAge)
    {
        this.age = newAge;
    }
    
    public void setWeight(double newWeight)
    {
        this.weight = newWeight;
    }
    
    public String getName()
    {
        return this.name;
    }
    public int getAge()
    {
        return this.age;
    }
    
    public double getWeight()
    {
        return this.weight;
    }
}