Add Albergo

src/Temi d'esame/Albergo/Albergo.java

@@ -0,0 +1,80 @@
+import java.util.Scanner;
+import java.io.PrintStream;
+
+public class Albergo{
+
+    public Albergo(String nome, double prezzo, boolean tv, boolean aria, boolean frigo, boolean internet){
+        this.nome=nome;
+        this.prezzo=prezzo;
+        this.tv=tv;
+        this.frigo=frigo;
+        this.internet=internet;
+        this.aria=aria;
+    }
+
+    public String getNome(){
+        return nome;
+    }
+
+    public double getPrezzo(){
+        return prezzo;
+    }
+
+    public boolean hasTV(){
+        return tv;
+    }
+
+    public boolean hasFrigo(){
+        return frigo;
+    }
+
+    public boolean hasInternet(){
+        return internet;
+    }
+
+    public boolean hasAria(){
+        return aria;
+    }
+
+    public static Albergo read(Scanner sc){
+        String nome;
+        double prezzo;
+        boolean tv, frigo, internet, aria;
+
+        if(!sc.hasNextLine()) return null;
+        nome=sc.nextLine();
+        if(!sc.hasNextLine()) return null;
+        prezzo=Double.parseDouble(sc.nextLine());
+        if(!sc.hasNextLine()) return null;
+        tv=sc.nextLine().equalsIgnoreCase("SI");
+        if(!sc.hasNextLine()) return null;
+        aria=sc.nextLine().equalsIgnoreCase("SI");
+        if(!sc.hasNextLine()) return null;
+        frigo=sc.nextLine().equalsIgnoreCase("SI");
+        if(!sc.hasNextLine()) return null;
+        internet=sc.nextLine().equalsIgnoreCase("SI");
+
+        return new Albergo(nome, prezzo, tv, aria, frigo, internet);
+    }
+
+    public void print(PrintStream ps){
+        String boole;
+        ps.println(nome);
+        ps.println(prezzo);
+        boole=tv?"SI":"NO";
+        ps.println(boole);
+        boole=aria?"SI":"NO";
+        ps.println(boole);
+        boole=frigo?"SI":"NO";
+        ps.println(boole);
+        boole=internet?"SI":"NO";
+        ps.println(boole);
+    }
+
+    private String nome;
+    private double prezzo;
+    private boolean tv;
+    private boolean frigo;
+    private boolean internet;
+    private boolean aria;
+}

src/Temi d'esame/Albergo/Test.java

@@ -0,0 +1,9 @@
+import java.util.Scanner;
+import java.io.File;
+
+public class Test{
+    public static void main(String [] args)throws Exception{
+        Trivago tri=new Trivago(new Scanner(new File("albergo.dat")));
+        tri.filtroTV().print(System.out);
+    }
+}

src/Temi d'esame/Albergo/Trivago.java

@@ -0,0 +1,131 @@
+import java.util.Scanner;
+import java.util.LinkedList;
+import java.io.PrintStream;
+import java.util.function.Predicate;
+
+public class Trivago{
+
+    public Trivago(Scanner sc){
+        list=new LinkedList<Albergo>();
+
+        Albergo a=Albergo.read(sc);
+        while(a!=null){
+            list.add(a);
+            a=Albergo.read(sc);
+        }
+    }
+
+    private Trivago(LinkedList<Albergo> newList){
+        this.list=newList;
+    }
+
+    public void print(PrintStream ps){
+        for(Albergo a: list){
+            a.print(ps);
+            ps.println("****");
+        }
+    }
+
+    private Trivago filtro(Predicate<Albergo> p){
+        LinkedList<Albergo> listFilter = new LinkedList<Albergo>();
+        for(Albergo a: list)
+            if(p.test(a))
+                listFilter.add(a);
+
+        return new Trivago(listFilter);
+    }
+
+    public Trivago filtroTV(){
+        return filtro(new TVPredicate());
+    }
+    
+    public Trivago filtroAria(){
+        return filtro(new AriaPredicate());
+    }
+
+    public Trivago filtroFrigo(){
+        return filtro(new FrigoPredicate());
+    }
+
+    public Trivago filtroInternet(){
+        return filtro(new InternetPredicate());
+    }
+
+    public Trivago filtroMaggiore(double prezzo){
+        return filtro(new MaggiorePredicate(prezzo));
+    }
+
+    public Trivago filtroMinore(double prezzo){
+        return filtro(new MinorePredicate(prezzo));
+    }
+
+    public Trivago filtroNome(String nome){
+        return filtro(new NomePredicate(nome));
+    }
+
+
+
+    private LinkedList<Albergo> list;
+}
+
+class TVPredicate implements Predicate<Albergo>{
+    public boolean test(Albergo a){
+        return a.hasTV();
+    }
+}
+
+class AriaPredicate implements Predicate<Albergo>{
+    public boolean test(Albergo a){
+        return a.hasAria();
+    }
+}
+
+class FrigoPredicate implements Predicate<Albergo>{
+    public boolean test(Albergo a){
+        return a.hasFrigo();
+    }
+}
+
+class InternetPredicate implements Predicate<Albergo>{
+    public boolean test(Albergo a){
+        return a.hasInternet();
+    }
+}
+
+class MaggiorePredicate implements Predicate<Albergo>{
+
+    public MaggiorePredicate(double prezzo){
+        this.prezzo=prezzo;
+    }
+
+    public boolean test(Albergo a){
+        return a.getPrezzo()>=prezzo?true:false;
+    }
+
+    private double prezzo;
+}
+
+class MinorePredicate implements Predicate<Albergo>{
+
+    public MinorePredicate(double prezzo){
+        this.prezzo=prezzo;
+    }
+
+    public boolean test(Albergo a){
+        return a.getPrezzo()<=prezzo?true:false;
+    }
+
+    private double prezzo;
+}
+
+class NomePredicate implements Predicate<Albergo>{
+    public NomePredicate(String nome){
+        this.nome=nome;
+    }
+
+    public boolean test(Albergo a){
+        return a.getNome().equals(nome);
+    }
+
+    private String nome;
+}

src/Temi d'esame/Albergo/albergo.dat

@@ -0,0 +1,18 @@
+Miramonti
+330
+SI
+NO
+NO
+SI
+Olimpia
+660
+NO
+SI
+SI
+NO
+Rosa
+540
+SI
+NO
+SI
+SI