created FileIOTest and changed Exception Handling of File IO

app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/App.java

@@ -16,19 +16,5 @@ public class App {
         System.out.println(new App().getGreeting());
 
         FileIO io = new FileIO(System.getProperty("user.dir") + File.separator + "tournierverwaltung_angrynerds");
-        Tournament tournament= new Tournament("helloo");
-        io.saveTournament(tournament);
-
-
-        List<File> tournaments = io.getList();
-
-        for (File name: tournaments) {
-
-            System.out.println(name.getName());
-        }
-
-        Tournament retrieved = io.loadTournament(tournaments.get(0));
-        System.out.println("data retreived:");
-        System.out.println(retrieved.getName());
     }
 }

app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/FileIO.java

@@ -1,12 +1,7 @@
 package ch.zhaw.projekt2.turnierverwaltung;
 
 
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.ObjectOutputStream;
-import java.io.ObjectInputStream;
+import java.io.*;
 import java.util.Arrays;
 import java.util.List;
 
@@ -27,22 +22,24 @@ public class FileIO {
         return Arrays.asList(saves.listFiles());
     }
 
-    public Tournament loadTournament(File tournamentFile) {
+    /**
+     *
+     * @param tournamentFile
+     * @return
+     * @throws ClassNotFoundException
+     * @throws IOException File not found or not readable.
+     */
+    public Tournament loadTournament(File tournamentFile) throws ClassNotFoundException, IOException {
         Tournament tournament;
-        try {
-            ObjectInputStream in = new ObjectInputStream(new FileInputStream(tournamentFile));
-            tournament = (Tournament) in.readObject();
-            in.close();
-            System.out.println("Save File" + tournament.getName() + ".txt being saved to " + saves.getAbsolutePath());
-
-        } catch (ClassNotFoundException | IOException e) {
-            throw new RuntimeException(e);
-        }
-
+        FileInputStream fileInputStream = new FileInputStream(tournamentFile);
+        ObjectInputStream in = new ObjectInputStream(fileInputStream);
+        tournament = (Tournament) in.readObject();
+        in.close(); //TODO: Evtl Try/finally?
+        System.out.println("Read File" + tournament.getName() + ".txt being read from " + saves.getAbsolutePath());
         return tournament;
     }
 
-    public void saveTournament(Tournament tournament) {
+    public void saveTournament(Tournament tournament) throws IllegalArgumentException {
         File newSave = new File(saves, tournament.getName() + ".txt");
         try {
             newSave.createNewFile();