diff --git a/java/2-7-Graphics/SimpleDraw.java b/java/2-7-Graphics/SimpleDraw.java
new file mode 100644
index 0000000000000000000000000000000000000000..4dec448c5d0bd174b50c9bd62015033cc5bb7089
--- /dev/null
+++ b/java/2-7-Graphics/SimpleDraw.java
@@ -0,0 +1,61 @@
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+
+public class SimpleDraw {
+ public static void main(String[] args) {
+ JFrame f = new JFrame("SimpleDraw");
+ f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+ f.setSize(300, 300);
+ f.setContentPane(new Canvas());
+ f.setVisible(true);
+ }
+}
+
+// JComponent is a base class for custom components
+class Canvas extends JComponent {
+
+ Point M = new Point(); // mouse point
+ Point C = new Point(150, 150); // click point
+
+ Canvas(){
+ super();
+ this.addMouseListener(new MouseAdapter(){
+ public void mouseClicked(MouseEvent e){
+ C.x = e.getX();
+ C.y = e.getY();
+ repaint();
+ }
+ });
+
+ this.addMouseMotionListener(new MouseAdapter(){
+ public void mouseMoved(MouseEvent e){
+ M.x = e.getX();
+ M.y = e.getY();
+ repaint();
+ }
+ });
+
+ }
+
+ // custom graphics drawing
+ public void paintComponent(Graphics g) {
+ super.paintComponent(g);
+ // cast to get 2D drawing methods
+ Graphics2D g2 = (Graphics2D) g;
+
+ g2.setColor(Color.BLACK);
+ g2.setStroke(new BasicStroke(2));
+ g2.drawLine(C.x, C.y, M.x, M.y);
+ g2.fillOval(M.x - 5, M.y - 5, 10, 10);
+
+ g2.setColor(Color.RED);
+ g2.fillOval(C.x - 5, C.y - 5, 10, 10);
+
+ g2.drawString(String.format("%d,%d", C.x, C.y), C.x + 10, C.y + 10);
+
+ g2.setColor(Color.BLACK);
+ g2.drawString(String.format("%d,%d", M.x, M.y), M.x + 10, M.y + 10);
+ }
+}
+
diff --git a/java/2-7-Graphics/Transform1.java b/java/2-7-Graphics/Transform1.java
new file mode 100644
index 0000000000000000000000000000000000000000..659e5b89aed54ad30d39fb439d768af5bdfd3d5a
--- /dev/null
+++ b/java/2-7-Graphics/Transform1.java
@@ -0,0 +1,100 @@
+/*
+* CS 349 Java Code Examples
+*
+* Transform1 Shows how to "manually" transform a shape model. NOTE: in practice,
+ you don't want do this. Use Graphics2D matrix tranformations instead.
+*
+*/
+import javax.swing.JFrame;
+import javax.swing.JComponent;
+import javax.swing.JButton;
+import java.awt.*;
+import java.awt.geom.*;
+import java.util.ArrayList;
+import javax.vecmath.*;
+import java.lang.Math.*;
+import java.util.Random;
+import java.awt.event.*;
+
+// create the window and run the demo
+public class Transform1 {
+
+ public static void main(String[] args) {
+ // create the window
+ Canvas canvas = new Canvas();
+ JFrame f = new JFrame("Transform1"); // jframe is the app window
+ f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+ f.setSize(400, 400); // window size
+ f.setContentPane(canvas); // add canvas to jframe
+ f.setVisible(true); // show the window
+ }
+}
+
+class Canvas extends JComponent {
+
+ // the house shape model (position is centred at top left corner)
+ private Polygon shape =
+ new Polygon(new int[] { -50, 50, 50, 0, -50},
+ new int[] { 75, 75, -25, -75, -25}, 5);
+
+ Point2d M = new Point2d();
+
+ Canvas() {
+ // events
+ this.addMouseMotionListener(new MouseAdapter(){
+ public void mouseMoved(MouseEvent e){
+ M.x = e.getX();
+ M.y = e.getY();
+ repaint();
+ }});
+ }
+
+ // custom graphics drawing
+ public void paintComponent(Graphics g) {
+ super.paintComponent(g); // JPanel paint
+ Graphics2D g2 = (Graphics2D)g;
+
+ // the shape will get transformed into "world" coordinates
+
+ // transform by hand
+ // get copy of shape
+ Polygon transShape =
+ new Polygon(shape.xpoints, shape.ypoints, shape.npoints);
+
+
+ rotate(transShape, 45);
+ scale(transShape, 2, 1);
+ translate(transShape, M.x, M.y);
+
+ g2.setStroke(new BasicStroke(3));
+ g2.drawPolygon(transShape.xpoints, transShape.ypoints, transShape.npoints);
+ }
+
+ // non-matrix translate
+ void translate(Polygon s, double tx, double ty) {
+ for (int i = 0; i < s.npoints; i++) {
+ s.xpoints[i] += tx;
+ s.ypoints[i] += ty;
+ }
+ }
+
+ // non-matrix scale
+ void scale(Polygon s, double sx, double sy) {
+ for (int i = 0; i < s.npoints; i++) {
+ s.xpoints[i] *= sx;
+ s.ypoints[i] *= sy;
+ }
+ }
+
+ // no-matrix rotate
+ void rotate(Polygon s, double theta) {
+ double rad = Math.toRadians(theta);
+ for (int i = 0; i < s.npoints; i++) {
+ int x = s.xpoints[i];
+ int y = s.ypoints[i];
+ s.xpoints[i] = (int)((double)x * Math.cos(rad) - y * Math.sin(rad));
+ s.ypoints[i] = (int)((double)x * Math.sin(rad) + y * Math.cos(rad));
+ }
+ }
+
+}
diff --git a/java/2-7-Graphics/makefile b/java/2-7-Graphics/makefile
new file mode 100644
index 0000000000000000000000000000000000000000..01fa22b3110bed51755d14e133a0451e5602bb9e
--- /dev/null
+++ b/java/2-7-Graphics/makefile
@@ -0,0 +1,25 @@
+# super simple makefile
+# call it using 'make NAME=name_of_code_file_without_extension'
+# (assumes a .java extension)
+NAME = SimpleDraw
+# you may need to pass OS=win to run on windows
+OS =
+
+# HACK: vecmath is included regardless if needed
+all:
+ @echo "Compiling..."
+ javac -cp vecmath.jar $(NAME).java
+
+run: all
+# windows needs a semicolon
+ifeq ($(OS),win)
+ @echo "Running on windows ..."
+ java -cp "vecmath.jar;." $(NAME)
+# everyone else likes a colon
+else
+ @echo "Running ..."
+ java -cp "vecmath.jar:." $(NAME)
+endif
+
+clean:
+ rm -rf *.class
diff --git a/java/2-7-Graphics/vecmath.jar b/java/2-7-Graphics/vecmath.jar
new file mode 100644
index 0000000000000000000000000000000000000000..6d8b3a11c9c7a02d736a2ccc7f07fa70eb319832
Binary files /dev/null and b/java/2-7-Graphics/vecmath.jar differ