Encapsulation - example

//first main class!
public class App {

    public static void main(String[] args) {
        Plant plant = new Plant();
        plant.print();

        System.out.println("Now accessing from App class " + plant.getNum());
        //let's change num inside Plant class ro 4
        plant.setNum(4);
        plant.print();


        System.out.println("\n"+ plant.getData());
        System.out.println(plant.getValue());
    }

}
///another class

class Plant {
    private int num = 123;
    private int value = 9;

    public  void setNum(int num) {
        this.num = num;
    }
    public int getNum(){
        return num;
    }
    public void print(){
        //setNum(5);
        System.out.println(num);
        System.out.println("the same but using method: "+ getNum());
    }
    //let's work with int value
    public int getValue(){
        return value;
    }

    public String getData(){
        String data = "words " + getValue();
        return data;
    }
}