Question

Define a class Person with fields for name and age.

Note: Add the following code to your main method:

public static void main(String[] args) throws Exception {
    Class person = Class.forName("Person");
    Field[] fields = person.getDeclaredFields();
    System.out.println(fields.length);
}

The output on the console should be 2. If you defined the class correctly, the test should pass.

Bonus*

Try to create a few objects of type Person:

Name	Age
Pesho	20
Gosho	18
Stamat	43

Use both the inline initialization and the default constructor.

Answer 1

Here's the solution:

import java.lang.reflect.Field;

class Person {
    int age;
    String name;
}

public class U_17_Classes {
    public static void main(String[] args) throws ClassNotFoundException {
        Class person = Class.forName("Person");
        Field[] fields = person.getDeclaredFields();
        System.out.println(fields.length);
    }
}