Meine Abgabe für das Nachtestat

nachtestat/src/nachtestat/Fassade.java

@@ -0,0 +1,11 @@
+package nachtestat;
+
+public class Fassade {
+
+	public static void main(String[] args) {
+		
+		new GUI();
+
+	}
+
+}

nachtestat/src/nachtestat/GUI.java

@@ -0,0 +1,218 @@
+package nachtestat;
+
+import java.awt.Component;
+import java.awt.GridLayout;
+import java.awt.event.ActionEvent;
+
+import java.awt.event.ActionListener;
+
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JTextArea;
+import javax.swing.JButton;
+
+import java.util.ArrayList;
+
+public class GUI implements ActionListener{
+	
+	
+	JFrame jf;
+	JLabel anzeige;
+	JTextArea bildschirm;
+	int numb = 0;
+	String operator = "";
+	
+	ArrayList<Integer> memory = new ArrayList<>();
+	
+	public GUI(){
+		jf = new JFrame();
+		anzeige = new JLabel();
+		anzeige.setBounds(0, 0, 400, 40);
+		
+		bildschirm = new JTextArea();
+		bildschirm.setBounds(0, 0, 380, 38);
+		bildschirm.setVisible(true);
+		anzeige.add(bildschirm);
+		anzeige.setVisible(true);
+		jf.add(anzeige);
+		jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		jf.setSize(500, 400);
+		jf.setLocationRelativeTo(null);
+		jf.setVisible(true);
+		
+		jf.setLayout(null);
+		
+		JButton btnMCR = new JButton("M(CR)");
+		btnMCR.setVisible(true);
+		btnMCR.setSize(60, 40);
+		jf.add(btnMCR);
+		JButton btnMMinus = new JButton("M-");
+		btnMMinus.setVisible(true);
+		//btnMMinus.setSize(60, 40);
+		btnMMinus.setBounds(0, 40, 60, 40);
+		jf.add(btnMMinus);
+		JButton btnMPlus = new JButton("M+");
+		btnMPlus.setVisible(true);
+		btnMPlus.setBounds(0, 80, 60, 40);
+		jf.add(btnMPlus);
+		JButton btnSqrt = new JButton("SQRT");
+		btnSqrt.setVisible(true);
+		btnSqrt.setBounds(0, 120, 60, 40);
+		jf.add(btnSqrt);
+		JButton btnONOFF = new JButton("ON/OFF");
+		btnONOFF.setVisible(true);
+		btnONOFF.setBounds(0, 160, 60, 40);
+		jf.add(btnONOFF);
+		
+		JButton btnOne = new JButton("1");
+		btnOne.setBounds(60, 40, 60, 40);
+		btnOne.setVisible(true);
+	
+		btnOne.putClientProperty(numb , 1);
+		btnOne.addActionListener(this);
+		jf.add(btnOne);
+		
+		JButton btnTwo = new JButton("2");
+		btnTwo.setBounds(60, 80, 60, 40);
+		btnTwo.setVisible(true);
+		
+		btnTwo.putClientProperty(numb , 2);
+		btnTwo.addActionListener(this);
+		jf.add(btnTwo);
+		
+		
+		JButton btnThree = new JButton("3");
+		btnThree.setBounds(60, 120, 60, 40);
+		btnThree.setVisible(true);
+		
+		btnThree.putClientProperty(numb, 3);
+		btnThree.addActionListener(this);
+		jf.add(btnThree);
+		
+		
+		JButton btnfour = new JButton("4");
+		btnfour.setBounds(120, 40, 60, 40);
+		btnfour.setVisible(true);
+		
+		btnfour.putClientProperty(numb, 4);
+		btnfour.addActionListener(this);
+		jf.add(btnfour);
+		
+		
+		JButton btnFive = new JButton("5");
+		btnFive.setBounds(120, 80, 60, 40);
+		btnFive.setVisible(true);
+		
+		btnFive.putClientProperty(numb, 5);
+		btnFive.addActionListener(this);
+		jf.add(btnFive);
+		
+		JButton btnSix = new JButton("6");
+		btnSix.setBounds(120, 120, 60, 40);
+		btnSix.setVisible(true);
+		
+		btnSix.putClientProperty(numb, 6);
+		btnSix.addActionListener(this);
+		jf.add(btnSix);
+		
+		JButton btnSeven = new JButton("7");
+		btnSeven.setBounds(180, 40, 60, 40);
+		btnSeven.setVisible(true);
+		
+		btnSeven.putClientProperty(numb, 7);
+		btnSeven.addActionListener(this);
+		jf.add(btnSeven);
+		
+		JButton btnEight = new JButton("8");
+		btnEight.setBounds(180, 80, 60, 40);
+		btnEight.setVisible(true);
+		
+		btnEight.putClientProperty(numb, 8);
+		btnEight.addActionListener(this);
+		jf.add(btnEight);
+		
+		
+		JButton btnNine = new JButton("9");
+		btnNine.setBounds(180, 120, 60, 40);
+		btnNine.setVisible(true);
+		
+		btnNine.putClientProperty(numb, 9);
+		btnNine.addActionListener(this);
+		jf.add(btnNine);
+		
+		
+		JButton btnPlus = new JButton("+");
+		btnPlus.setBounds(240, 40, 60, 40);
+		btnPlus.setVisible(true);
+	
+		btnPlus.addActionListener(new ActionListener() {
+
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				// TODO Auto-generated method stub
+				
+				int a = memory.get(0);
+				int b = memory.get(1);
+				
+				addieren(a,b);
+				
+				memory.removeAll(memory);
+			}
+			
+		});
+		jf.add(btnPlus);
+		
+		
+		
+
+		JButton btnMinus = new JButton("-");
+		btnPlus.setBounds(240, 80, 60, 40);
+		btnPlus.setVisible(true);
+	
+		btnPlus.addActionListener(new ActionListener() {
+
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				// TODO Auto-generated method stub
+				
+				int a = memory.get(0);
+				int b = memory.get(1);
+				
+				subtrahieren(a,b);
+				
+				memory.removeAll(memory);
+			}
+			
+		});
+		jf.add(btnPlus);
+		
+	}
+	
+	public int addieren (int a, int b) {
+		
+		System.out.println(a+b);
+		return a +b;
+	}
+	
+	
+	public int subtrahieren(int a, int b) {
+		return a -b;
+	}
+		
+
+	@Override
+	public void actionPerformed(ActionEvent e) {
+		// TODO Auto-generated method stub
+		
+		JButton btn = (JButton) e.getSource();
+		
+		bildschirm.add((Component) btn.getClientProperty(numb));
+		
+		memory.add((int) btn.getClientProperty(numb));
+		
+		
+	}
+
+	
+	
+}