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MainGUI.java

+package notenmanager;
+import java.awt.EventQueue;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class MainGUI extends JFrame {
+
+	public MainGUI() {
+		setTitle("Notenmanager");
+		setSize(960, 540);
+		setLocationRelativeTo(null);
+		setDefaultCloseOperation(EXIT_ON_CLOSE);
+		
+		Container pane = getContentPane();
+		GroupLayout groupLayout = new GroupLayout(pane);
+		pane.setLayout(groupLayout);
+		
+		JButton	button = new JButton("Test");
+		button.addActionListener(new ActionListener() {
+			
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				System.out.println("TEST erfolgreich");	
+			}
+		});
+		
+		groupLayout.setVerticalGroup(groupLayout.createSequentialGroup().addComponent(button));
+		groupLayout.setHorizontalGroup(groupLayout.createSequentialGroup().addComponent(button));
+		
+		groupLayout.setAutoCreateContainerGaps(true);
+	}
+	
+	public static void main(String[] args) {
+		EventQueue.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				MainGUI main = new MainGUI();
+				main.setVisible(true);
+			}
+		});
+	}
+
+}