Converting a Dog to a Person
an anonymous user
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import java.util.*; import java.lang.*; import java.io.*; class Dog { public String name; public Dog (String name) { this.name = name; } } class Person { public String name; public Person (String name) { this.name = name; } } class Greeter { public static void greet (Person person) { System.out.println("Hello, " + person.name + "!"); } } class Main { public static void main(String[] args) { Dog dog = new Dog("Fido"); Person person = new Person("Fido"); // System.out.println(dog == person); // error: incomparable types: Dog and Person System.out.println(dog.equals(person)); // false System.out.println(person.equals(dog)); // false Greeter.greet(person); // Hello, Fido! // Greeter.greet(dog); // error: incompatible types: Dog cannot be converted to Person } }
Output
(Run the program to view its output)
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