Etliche Bugfixes + Fehlerhandling

Budget Projekt/src/MeinBudgetView/MeinGui.java

@@ -47,6 +47,7 @@ public class MeinGui extends JFrame implements ActionListener {
 	JButton loeschen;
 	JButton exit;
 	JButton hinzufuegen;
+	JButton erspartesLoeschen;
 	public static JLabel budgetDispaly;
 	public static JLabel expensesDisplay;
 	public static JLabel balanceDisplay;
@@ -212,10 +213,15 @@ public class MeinGui extends JFrame implements ActionListener {
 		contentPane.add(savingsDisplay);
 		
 		//Einfügen und hinzufügen des "Hinzufügen" Buttons
-		this.hinzufuegen = new JButton("Hinzuf\\u00fcgen");
-		hinzufuegen.setBounds(660, 126, 89, 23);
+		this.hinzufuegen = new JButton("Hinzuf\u00fcgen");
+		hinzufuegen.setBounds(660, 126, 100, 23);
 		contentPane.add(hinzufuegen);
 		
+		//Einfügen und hinzufügen des "Erspartes löschen" Buttons
+		this.erspartesLoeschen = new JButton("Erspartes L\u00F6schen");
+		erspartesLoeschen.setBounds(660, 160, 150, 23);
+		contentPane.add(erspartesLoeschen);
+
 		//Einfügen des Textfeldes für die Beschreibung der Ausgabe
 		textExpensesName = new JTextField();
 		textExpensesName.setBounds(60, 221, 128, 20);
@@ -272,51 +278,67 @@ public class MeinGui extends JFrame implements ActionListener {
 		loeschen.addActionListener(this);
 		exit.addActionListener(this);
 		hinzufuegen.addActionListener(this);
+		erspartesLoeschen.addActionListener(this);
 
 	}
 
 	@Override
 	public void actionPerformed(ActionEvent ae) {
-		try {
-			budget = Double.parseDouble(text1.getText());	
-		} catch (Exception e) {
-			showMessageDialog(null, "Sie müssen ihr Budget eingeben!");
-		}
-
 	
 		if (ae.getSource() == this.exit) {
 			exitButton();
 		}
 		
-		if (ae.getSource() == this.loeschen) {
+		else if (ae.getSource() == this.loeschen) {
 			leeren();
 		}
 		
+		else if(ae.getSource() == this.erspartesLoeschen) {
+			loescheErspartes();
+		}
 		
 
-		if (ae.getSource() == this.senden && (text1 != null && text2 != null)) {
+		
+		else if (ae.getSource() == this.senden && (text1 != null && text2 != null)) {
+			try {
+			budget = Double.parseDouble(text1.getText());				
+			}
+			catch (Exception e) {
+				showMessageDialog(null, "Sie müssen ihr Budget eingeben!");
+			}
 			budgetDispaly.setText(setBudgetView());
 		}
 
-		if (ae.getSource() == this.berechne && (text1 != null && text2 != null)) {
-			DefaultTableModel tab = (DefaultTableModel) myTable.getModel();
-			tab.addRow(new Object[] { (textExpensesName.getText()), Double.parseDouble(text2.getText()) });
+		else if (ae.getSource() == this.berechne && (text1 != null && text2 != null)) {
+			try {
+				DefaultTableModel tab = (DefaultTableModel) myTable.getModel();
+				tab.addRow(new Object[] { (textExpensesName.getText()), Double.parseDouble(text2.getText()) });
+	
+				balance -= Double.parseDouble(text2.getText());
+				expenses += Double.parseDouble(text2.getText());
+				expensesDisplay.setText(setExpensesView());
+				balanceDisplay.setText(setBalanceView());
+			}
+			catch (Exception e) {
+				showMessageDialog(null, "Sie müssen ihre Ausgabe eingeben!");
+			}
 
-			balance -= Double.parseDouble(text2.getText());
-			expenses += Double.parseDouble(text2.getText());
-			expensesDisplay.setText(setExpensesView());
-			balanceDisplay.setText(setBalanceView());
 
 		}
 		
-		if (ae.getSource() == this.hinzufuegen) {
+		else if (ae.getSource() == this.hinzufuegen) {
 			erspartesHinzufuegen();
 		}
 
 	}
 
+	private void loescheErspartes() {
+		erspartes = 0.0;
+		savingsDisplay.setText("0.0 \u20AC");
+		
+	}
+
 	private void erspartesHinzufuegen() {	
-	    try {
 	    	erspartes += (budget - expenses); 
 			budget = 0.0;
 			expenses = 0.0;
@@ -326,14 +348,9 @@ public class MeinGui extends JFrame implements ActionListener {
 			budgetDispaly.setText("0.0 \u20AC");
 			expensesDisplay.setText("0.0 \u20AC");
 			balanceDisplay.setText("0.0 \u20AC");
-			savingsDisplay.setText(Double.toString(erspartes));
+			savingsDisplay.setText(Double.toString(erspartes) + " \u20AC");
 			textExpensesName.setText(null);
 			((DefaultTableModel) myTable.getModel()).setRowCount(0);
-	      } catch (Exception e) {
-	    	  showMessageDialog(null, "Sie müssen ihr Budget und ihre Ausgaben eingeben!");
-	      }
-
-		
 	}
 
 	public static void exitButton() {