Lezione 14 09 2022

CassaAcustica.java

package test;

/**
 *
 * @author 15367519
 */
public class CassaAcustica {
    private int volume;

    public int getVolume() {
        return volume;
    }

    public void setVolume(int volume) {
        if (volume <= 100 && volume >=0) {
            this.volume = volume;
        }
    }
    
   
}

CassaAcusticaConPotenza.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package test;

/**
 *
 * @author 15367519
 */
public class CassaAcusticaConPotenza {
    private int volume;
    private final int potenza;

    public CassaAcusticaConPotenza(int pot) {
        potenza = pot;
    }

    public int getPotenzaMassima() {
        return potenza;
    }
    
    public int getPotenza() {
        return potenza * volume / 100;
    }
   

    public int getVolume() {
        
        return volume;
    }

    public void setVolume(int volume) {
        if (volume <= 100 && volume >=0) {
            this.volume = volume;
        }
    }
}

Telecomando.java

package test;
public class Telecomando {

    private CassaAcusticaConPotenza cassaAcustica;

    void connect(CassaAcusticaConPotenza cassa) {
        cassaAcustica = cassa;
    }
    
    void alzaVolume() {
        var v = cassaAcustica.getVolume();
        cassaAcustica.setVolume(v+1);
    }
    
    void abbassaVolume() {}
    
}

Test.java

package test;

/**
 *
 * @author 15367519
 */
public class Test {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        System.out.println("test");
        var cassa = new CassaAcusticaConPotenza(80);
        cassa.setVolume(90);
        System.out.println("volume = " + cassa.getVolume());
        System.out.println("potenza = " + cassa.getPotenza());
        var telecomando = new Telecomando();
        telecomando.connect(cassa);
        telecomando.alzaVolume();
        System.out.println("volume = " + cassa.getVolume());
    }
    
}