save and load works

src/de/hs_mannheim/informatik/bank/Main.java

@@ -5,7 +5,7 @@ import de.hs_mannheim.informatik.bank.ui.UI;
 
 public class Main {
 
-	public static void main(String[] args) {
+	public static void main(String[] args) throws Exception {
 		Banksystem bs = new Banksystem("Spaßkasse Mannheim");
 		UI ui = new UI(bs);
 	}

src/de/hs_mannheim/informatik/bank/domain/Bank.java

@@ -1,18 +1,33 @@
 package de.hs_mannheim.informatik.bank.domain;
 
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Collection;
 import java.util.Date;
 import java.util.HashMap;
+import java.util.Map.Entry;
 
-public class Bank {
+import de.hs_mannheim.informatik.bank.facade.Banksystem;
+
+public class Bank implements Serializable {
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
 	private Konto k;
+//	private Banksystem bsy;
 	private String name;
 	private HashMap<Integer, Konto> konten = new HashMap<>();
 
-	
 	public Bank(String name) {
 		this.name = name;
 	}
@@ -71,4 +86,5 @@ public class Bank {
 		String[] auzügeStrings = k.getKontoAktivietetenString().split(",");
 		return auzügeStrings;
 	}
+	
 }

src/de/hs_mannheim/informatik/bank/domain/Konto.java

@@ -1,8 +1,13 @@
 package de.hs_mannheim.informatik.bank.domain;
 
-import javax.lang.model.element.NestingKind;
+import java.io.Serializable;
 
-public class Konto {
+public class Konto implements Serializable {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
 
 	private static int kontozähler = 0;
 	
@@ -43,4 +48,6 @@ public class Konto {
 		return "Konto [nummer=" + nummer + ", inhaber=" + inhaber + ", Kontostand=" + stand + "]";
 	}
 	
+	
+	
 }

src/de/hs_mannheim/informatik/bank/facade/BankSystemTest.java

@@ -26,10 +26,12 @@ public class BankSystemTest {
     }
 
     
-   /*  public void testGeldEinzahlenAPI(){
+   @Test
-        bs.addKonto(k1);
+   public void testAbhebenZuWenigGeld() {
-        float geldSehen = bSys.geldEinzahlen(1000, 100);
+	   Bank bs = new Bank("Volksbank");
-        float testLookMoney = 100;
+	   Konto k = new Konto("Müller");
-        assertEquals(geldSehen, testLookMoney);
+	   bs.addKonto(k);
-    }*/
+	   String test = "Sie haben zu wenig Geld auf ihrem Konto";
+	   assertEquals(bs.geldAbhebenBank(1000, 300), test);
+   }
 }

src/de/hs_mannheim/informatik/bank/facade/Banksystem.java

@@ -1,13 +1,22 @@
 package de.hs_mannheim.informatik.bank.facade;
 
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
 import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map.Entry;
 
 import de.hs_mannheim.informatik.bank.domain.Bank;
 import de.hs_mannheim.informatik.bank.domain.Konto;
+import persistence.Persistenc;
 
 public class Banksystem {
 	private Bank bank;
-	
+	private Persistenc per = new Persistenc();
 	public Banksystem(String bankname) {
 		this.bank = new Bank(bankname);
 	}
@@ -54,4 +63,15 @@ public class Banksystem {
 		String[] auszügeStrings = bank.getAuszüge(kontoNummer);
 		return auszügeStrings;
 	}
+
+	public void saveKonten() throws Exception {
+		per.saveKontos(bank);
+		
+	}
+	
+	public void loadKonten() throws Exception {
+		bank = per.load();
+	}
+	
+
 }

src/de/hs_mannheim/informatik/bank/ui/UI.java

@@ -9,12 +9,12 @@ public class UI {
 	private Banksystem bs;
 	Scanner sc = new Scanner(System.in);
 
-	public UI(Banksystem bs) {
+	public UI(Banksystem bs) throws Exception {
 		this.bs = bs;
 		hauptmenue();
 	}
 
-	private void hauptmenue() {
+	private void hauptmenue() throws Exception{
 		System.out.println("Willkommen bei der " + bs.getBankname() + "!");
 
 		mainloop: 
@@ -28,6 +28,7 @@ public class UI {
 				System.out.println("4 -> Konto abfragen");
 				System.out.println("5 -> Geld abheben");
 				System.out.println("6 -> Kontoauszüge ausgeben");
+				System.out.println("7 -> Konten laden");
 				System.out.println("9 -> Beenden");
 				System.out.println();
 
@@ -42,13 +43,24 @@ public class UI {
 					case 4: kontoAbfragen(); break;
 					case 5: geldAbheben(); break;
 					case 6: kontoauszügeAnsugeben(); break;
+					case 7: kontenLaden(); break;
 					case 9: break mainloop;
 				}
+				try {
+					bs.saveKonten();
+				} catch (Exception e) {
+					// TODO: handle exception
 				}
-
+			//		
 		System.out.println("Auf Wiedersehen!");
 
 	} // hauptmenü
+		}
+
+	private void kontenLaden() throws Exception {
+		bs.loadKonten();
+		
+	}
 
 	private void kontoauszügeAnsugeben() {
 		System.out.println("Geben Sie ihre Kontonummer ein");

src/persistence/Persistenc.java

@@ -0,0 +1,36 @@
+package persistence;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+
+import de.hs_mannheim.informatik.bank.domain.Bank;
+
+public class Persistenc {
+	
+	
+	public void saveKontos(Bank bank) throws Exception {
+		//	File fileKonton = new File("Konten.txt");
+			FileOutputStream fOS;
+			fOS = new FileOutputStream("Konten.ser");
+			ObjectOutputStream oos = new ObjectOutputStream(fOS);
+			oos.writeObject(bank);
+			oos.flush();
+			oos.close();
+			fOS.close();
+	}
+	
+	public Bank load() throws Exception {
+		//	File toRead = new File("Konten.ser");
+			FileInputStream fis = new FileInputStream("Konten.ser");
+			ObjectInputStream ois = new ObjectInputStream(fis);
+			Bank bank = (Bank) ois.readObject();
+			ois.close();
+			fis.close();
+		return bank;
+	}
+
+}