started with the TicTacToe_MinMax Project. Finished the rendering of the game.

TODO: Make a playable version and add MinMax

DemoProjects/DemoProjects.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

DemoProjects/src/painting/SwingPaintDemo1.java

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+package painting;
+
+import javax.swing.SwingUtilities;
+import javax.swing.JFrame;
+
+public class SwingPaintDemo1 {
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                createAndShowGUI();
+            }
+        });
+    }
+
+    private static void createAndShowGUI() {
+        System.out.println("Created GUI on EDT? " +
+                SwingUtilities.isEventDispatchThread());
+        JFrame f = new JFrame("Swing Paint Demo");
+        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        f.setSize(250, 250);
+        f.setVisible(true);
+    }
+}

DemoProjects/src/painting/SwingPaintDemo2.java

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+package painting;
+
+import javax.swing.SwingUtilities;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.BorderFactory;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics;
+
+public class SwingPaintDemo2 {
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                createAndShowGUI();
+            }
+        });
+    }
+
+    private static void createAndShowGUI() {
+        System.out.println("Created GUI on EDT? "+
+                SwingUtilities.isEventDispatchThread());
+        JFrame f = new JFrame("Swing Paint Demo");
+        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        f.add(new MyPanel1());
+        f.pack();
+        f.setVisible(true);
+    }
+}
+
+class MyPanel1 extends JPanel {
+
+    public MyPanel1() {
+        setBorder(BorderFactory.createLineBorder(Color.blue));
+    }
+
+    public Dimension getPreferredSize() {
+        return new Dimension(900,900);
+    }
+
+    public void paintComponent(Graphics g) {
+        super.paintComponent(g);
+
+        // Draw Text
+        g.drawString("This is my custom Panel!", getSize().width/2,getSize().height/2);
+        System.out.println("called");
+    }
+}

DemoProjects/src/painting/SwingPaintDemo3.java

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+package painting;
+
+import javax.swing.SwingUtilities;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.BorderFactory;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseMotionListener;
+import java.awt.event.MouseMotionAdapter;
+
+public class SwingPaintDemo3 {
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                createAndShowGUI();
+            }
+        });
+    }
+
+    private static void createAndShowGUI() {
+        System.out.println("Created GUI on EDT? "+
+                SwingUtilities.isEventDispatchThread());
+        JFrame f = new JFrame("Swing Paint Demo");
+        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        f.add(new MyPanel2());
+        f.pack();
+        f.setVisible(true);
+    }
+}
+
+class MyPanel2 extends JPanel {
+
+    private int squareX = 50;
+    private int squareY = 50;
+    private int squareW = 20;
+    private int squareH = 20;
+
+    public MyPanel2() {
+
+        setBorder(BorderFactory.createLineBorder(Color.black));
+
+        addMouseListener(new MouseAdapter() {
+            public void mousePressed(MouseEvent e) {
+                moveSquare(e.getX(),e.getY());
+            }
+        });
+
+        addMouseMotionListener(new MouseAdapter() {
+            public void mouseDragged(MouseEvent e) {
+                moveSquare(e.getX(),e.getY());
+            }
+        });
+
+    }
+
+    private void moveSquare(int x, int y) {
+        int OFFSET = 1;
+        if ((squareX!=x) || (squareY!=y)) {
+            repaint(squareX,squareY,squareW+OFFSET,squareH+OFFSET);
+            squareX=x;
+            squareY=y;
+            repaint(squareX,squareY,squareW+OFFSET,squareH+OFFSET);
+        }
+    }
+
+
+    public Dimension getPreferredSize() {
+        return new Dimension(250,200);
+    }
+
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        g.drawString("This is my custom Panel!",10,20);
+        g.setColor(Color.RED);
+        g.fillRect(squareX,squareY,squareW,squareH);
+        g.setColor(Color.BLACK);
+        g.drawRect(squareX,squareY,squareW,squareH);
+    }
+}

DemoProjects/src/painting/SwingPaintDemo4.java

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+package painting;
+
+import javax.swing.SwingUtilities;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.BorderFactory;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseAdapter;
+
+public class SwingPaintDemo4 {
+
+    public static void main(String[] args) {
+
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                createAndShowGUI();
+            }
+        });
+    }
+
+    private static void createAndShowGUI() {
+        System.out.println("Created GUI on EDT? "+
+                SwingUtilities.isEventDispatchThread());
+        JFrame f = new JFrame("Swing Paint Demo");
+        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        f.add(new MyPanel3());
+        f.setSize(250,250);
+        f.setVisible(true);
+    }
+
+}
+
+class MyPanel3 extends JPanel {
+
+    RedSquare redSquare = new RedSquare();
+    RedSquare redSquare2 = new RedSquare();
+
+    public MyPanel3() {
+
+        setBorder(BorderFactory.createLineBorder(Color.black));
+
+        addMouseListener(new MouseAdapter(){
+            public void mousePressed(MouseEvent e){
+                moveSquare(e.getX(),e.getY());
+            }
+        });
+
+        addMouseMotionListener(new MouseAdapter(){
+            public void mouseDragged(MouseEvent e){
+                moveSquare(e.getX(),e.getY());
+            }
+        });
+
+    }
+
+    private void moveSquare(int x, int y){
+
+        // Current square state, stored as final variables
+        // to avoid repeat invocations of the same methods.
+        final int CURR_X = redSquare.getX();
+        final int CURR_Y = redSquare.getY();
+        final int CURR_W = redSquare.getWidth();
+        final int CURR_H = redSquare.getHeight();
+        final int OFFSET = 1;
+
+        if ((CURR_X!=x) || (CURR_Y!=y)) {
+
+            // The square is moving, repaint background
+            // over the old square location.
+            repaint(CURR_X,CURR_Y,CURR_W+OFFSET,CURR_H+OFFSET);
+
+            // Update coordinates.
+            redSquare.setX(x);
+            redSquare.setY(y);
+
+            // Repaint the square at the new location.
+            repaint(redSquare.getX(), redSquare.getY(),
+                    redSquare.getWidth()+OFFSET,
+                    redSquare.getHeight()+OFFSET);
+        }
+    }
+
+    public Dimension getPreferredSize() {
+        return new Dimension(250,200);
+    }
+
+    public void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        g.drawString("This is my custom Panel!",10,20);
+        System.out.println(getSize());
+        redSquare.paintSquare(g);
+        redSquare2.paintSquare(g);
+    }
+}
+
+class RedSquare{
+
+    private int xPos = 50;
+    private int yPos = 50;
+    private int width = 20;
+    private int height = 20;
+
+    public void setX(int xPos){
+        this.xPos = xPos;
+    }
+
+    public int getX(){
+        return xPos;
+    }
+
+    public void setY(int yPos){
+        this.yPos = yPos;
+    }
+
+    public int getY(){
+        return yPos;
+    }
+
+    public int getWidth(){
+        return width;
+    }
+
+    public int getHeight(){
+        return height;
+    }
+
+    public void paintSquare(Graphics g){
+        g.setColor(Color.RED);
+        g.fillRect(xPos,yPos,width,height);
+        g.setColor(Color.BLACK);
+        g.drawRect(xPos,yPos,width,height);
+    }
+}