that should make how object is working for calling a different function and "this" keyword function pls help me

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: " + person.age); person.adjustAge(person.age); System.out.println("Adjusted age: " + person.age); } public static class Person { public int age = 20; public void adjustAge(int age) { this.age =this.age + 20; System.out.println("The age in adjustAge() is " + age); } } }