what is the problem here

Question about the task

Under discussion

package com.codegym.task.task04.task0401;

/*
This age doesn't work for me…

*/
public class Solution {
    public static void main(String[] args) {

        Person person = new Person();
        System.out.println("Age is: " + person.age);
        person.adjustAge(person.age);
        System.out.println("Adjusted Age is: " + person.age);
    }

    public static class Person {
        public int age = 20;

        public void adjustAge(int age) {
            age = age + 20;
            System.out.println("The Age in adjustAge() is " + age);

        }
    }
}

Think about what the program is doing.
Fix the programming error so that person.age changes value.

Hint:
carefully review the adjustAge method.

Requirements:

The program should display text on the screen.
The Person class should have a public int field called age.
The Person class's adjustAge method should display text on the screen.
The Person class's adjustAge method must have only one int parameter named age, and the method must be void.
The main method should call the adjustAge method only once.
The Person class's adjustAge method should increase the Person's age by 20.

package com.codegym.task.task04.task0401; /* This age doesn't work for me… */ public class Solution { public static void main(String[] args) { Person person = new Person(); System.out.println("Age is: " + person.age); person.adjustAge(person.age); System.out.println("Adjusted Age is: " + person.age); } public static class Person { public int age = 20; public void adjustAge(int age) { age = age + 20; System.out.println("The Age in adjustAge() is " + age); } } }

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Hashirama

Level 26 , Port-Harcourt, Nigeria

28 December 2018, 11:24

The Person class has a variable called age and this name is same with the parameter of its adjustAge() method. In order to use the age in the class inside the adjustAge() method, we have to reference it by using the this keyword.