lab12

lab/lab12/Question1/MyFrame.java

@@ -0,0 +1,30 @@
+import java.awt.*;
+import javax.swing.*;
+
+public class MyFrame extends JFrame {
+	public MyFrame() {
+		// init frame
+		setSize(400, 300);
+		setTitle("MyFrame");
+		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		setLayout(new BorderLayout());
+
+		// craete components
+		JPanel panel = new JPanel();
+		panel.setLayout(new FlowLayout(FlowLayout.CENTER));
+		JButton button1 = new JButton("left");
+		JButton button2 = new JButton("right");
+
+		// set layout
+		panel.add(button1);
+		panel.add(button2);
+		add(panel, BorderLayout.PAGE_START);
+
+		// MyPanel object
+		MyPanel mp = new MyPanel(new FlowLayout(FlowLayout.CENTER));
+		add(mp, BorderLayout.CENTER);
+
+		// done
+		setVisible(true);
+	}
+}

lab/lab12/Question1/MyPanel.java

@@ -0,0 +1,21 @@
+import java.awt.*;
+import javax.swing.*;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+public class MyPanel extends JPanel {
+	public MyPanel(LayoutManager layout) {
+		super(layout);
+
+		// add anonymouse listener
+		addMouseListener(new MouseAdapter() {
+			@Override
+			public void mouseClicked(MouseEvent e) {
+				// print if left clicked
+				if (e.getButton() == MouseEvent.BUTTON1) {
+					System.out.println("Left button clicked at " + e.getX() + "," + e.getY());
+				}
+			}
+		});
+	}
+}

lab/lab12/Question1/Start.java

@@ -0,0 +1,12 @@
+/**
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007).
+ */
+public class Start {
+	public static void main(String args[]) {
+		javax.swing.SwingUtilities.invokeLater(new Runnable() {
+			public void run() {
+				new MyFrame();
+			}
+		});
+	}
+}

lab/lab12/Question2/MyFrame.java

@@ -0,0 +1,28 @@
+import java.awt.*;
+import javax.swing.*;
+
+public class MyFrame extends JFrame {
+	public MyFrame() {
+		// init
+		setSize(400, 300);
+		setTitle("MyFrame");
+		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		setLayout(new BorderLayout());
+
+		// add layout
+		JPanel panel = new JPanel();
+		panel.setLayout(new FlowLayout(FlowLayout.CENTER));
+		JButton button1 = new JButton("left");
+		JButton button2 = new JButton("right");
+		panel.add(button1);
+		panel.add(button2);
+		add(panel, BorderLayout.PAGE_START);
+
+		// MyPanel object
+		MyPanel mp = new MyPanel(new FlowLayout(FlowLayout.CENTER));
+		add(mp, BorderLayout.CENTER);
+
+		// done
+		setVisible(true);
+	}
+}

lab/lab12/Question2/MyPanel.java

@@ -0,0 +1,37 @@
+import java.awt.*;
+import javax.swing.*;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+public class MyPanel extends JPanel {
+	private int x = -1;
+	private int y = -1;
+
+	public MyPanel(LayoutManager layout) {
+		super(layout);
+
+		// anonymouse listener
+		addMouseListener(new MouseAdapter() {
+			@Override
+			public void mouseClicked(MouseEvent e) {
+				// left clicked
+				if (e.getButton() == MouseEvent.BUTTON1) {
+					System.out.println("Left button clicked at " + e.getX() + "," + e.getY());
+				}
+				x = e.getX();
+				y = e.getY();
+				repaint();
+			}
+		});
+	}
+
+	@Override
+	protected void paintComponent(Graphics g) {
+		super.paintComponent(g);
+
+		// red dot
+		g.setColor(Color.RED);
+		g.drawRect(x, y, 1, 1);
+	}
+
+}

lab/lab12/Question2/Start.java

@@ -0,0 +1,12 @@
+/**
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007).
+ */
+public class Start {
+	public static void main(String args[]) {
+		javax.swing.SwingUtilities.invokeLater(new Runnable() {
+			public void run() {
+				new MyFrame();
+			}
+		});
+	}
+}