Initial commit

src/rubricatelefonicafile/RubricaTelefonicaFile.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Main.java to edit this template
+ */
+package rubricatelefonicafile;
+
+import java.util.InputMismatchException;
+import java.util.Scanner;
+
+/**
+ *
+ * @author Verde
+ */
+public class RubricaTelefonicaFile {
+
+    /**
+     * @param args the command line arguments
+     */
+
+    static Scanner sc = new Scanner(System.in);
+
+    public static void main(String[] args) {
+        int scelta = -1;
+
+        do {
+            System.out.println("Scegliere un'opzione:");
+            System.out.println("1. ");
+            System.out.println("2. ");
+            System.out.println("3. ");
+            System.out.println("0. Esci");
+            System.out.print("Opzione: ");
+
+            try {
+                scelta = sc.nextInt();
+                sc.nextLine();
+
+                switch (scelta) {
+                    case 0:
+                        break;
+                    case 1:
+
+                        pausa();
+                        break;
+                    case 2:
+
+                        pausa();
+                        break;
+                    case 3:
+
+                        pausa();
+                        break;
+                    default:
+                        System.out.println("Opzione non valida.");
+                        pausa();
+                        break;
+                }
+            }
+            catch (InputMismatchException _) {
+                System.out.println("Errore: scelta non valida.");
+                pausa();
+            }
+        } while (scelta != 0);
+    }
+
+    public static void pausa() {
+        System.out.println("Premere un tasto per continuare. . .");
+        sc.nextLine();
+    }
+}