package tutorial9; class Person { // class can have data String name; int age; // class can have subroutines, known as class methods void sayHello() { System.out.println("hello" + " my name is " + name); } } public class App { public static void main(String[] args) { // we make a bob instance of Person class Person bob = new Person(); bob.name = "bob"; bob.age = 75; // we make a joe instane of Person class Person joe = new Person(); joe.name = "joe"; joe.age = 70; System.out.println(joe.name); System.out.println(joe.age); System.out.println(bob.name); System.out.println(bob.age); // have the bob instance of Person use its sayHello method bob.sayHello(); } }