GRAF von GRAPH

ButtonAAAAAction.java

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+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+public class ButtonAAAAAction implements ActionListener
+{
+    private String text;
+    public ButtonAAAAAction(String t){
+        this.text = t;
+    }
+    public void actionPerformed(ActionEvent e){
+        System.out.println(this.text);
+    }
+}

MyPanel.java

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+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+
+
+
+public class MyPanel extends JPanel
+{
+    public boolean linie = false; 
+    public boolean kreis = false;
+    int x = 100; 
+    int y = 100000000;
+    @Override
+    protected void paintComponent(Graphics g){
+        super.paintComponent(g);
+
+        if (linie) g.drawLine(20,20,200,50);
+        if (kreis) g.drawOval(50, 50, 30, 30);
+
+    }
+}

Window.java

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+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+
+public class Window implements ActionListener
+{
+    private JFrame fenster;
+    private MyPanel panel;
+    private JButton button;
+    private JButton button2;
+    public  Window(){
+        fenster = new JFrame("Mein erstes Fenster");
+        fenster.setSize(400,400);
+        
+        panel = new MyPanel();
+        
+        fenster.add(panel);
+        panel.setBackground(new Color(100,100,100));
+        
+        button = new JButton ("Linie");
+        panel.add(button); 
+        button.addActionListener(this);
+        
+        button2 = new JButton("Kreis");
+        panel.add(button2);
+        button2.addActionListener(this);
+    
+        
+        fenster.setVisible(true);
+        
+        fenster.addMouseListener(new MouseListener(){
+            public void MouseEntered(MouseEvent e){};
+            public void MousePressed(MouseEvent e){
+                System.out.println("( " + e.getPoint().getX() + " | " + e.getPoint().getY() + " )");
+                panel.x = (int)e.getPoint().getX();
+                panel.y = (int)e.getPoint().getY();
+                fenster.repaint();
+            
+            };
+            public void MouseReleased(MouseEvent e){};
+            public void MouseCicked(MouseEvent e){};
+            public void MouseExited(MouseEvent e){};
+            
+        });
+    }
+    
+    
+    public void actionPerformed(ActionEvent e){
+        if (e.getSource() == this.button) panel.linie = !panel.linie;
+        if (e.getSource() == this.button2) panel.kreis = !panel.kreis;
+        fenster.repaint();
+    }
+}
+