Game-1,2,3: Added comments

Technology/Game-2/src/Game/Missile.java

@@ -2,6 +2,7 @@
 
 package Game;
 
+//Inherit some methods shared with class SpaceShip
 public class Missile extends Sprite {
 
     private final int BOARD_WIDTH = 800;

Technology/Game-2/src/Game/SpaceShip.java

@@ -6,6 +6,7 @@ import java.awt.event.KeyEvent;
 import java.util.ArrayList;
 import java.util.List;
 
+// Inherit some methods shared with class Missile
 public class SpaceShip extends Sprite {
 
     private int dx;
@@ -19,7 +20,6 @@ public class SpaceShip extends Sprite {
     }
 
     private void initSpaceShip() {
-
         missiles = new ArrayList<>();
         
         loadImage("src/resources/spaceship.png"); 
@@ -36,7 +36,6 @@ public class SpaceShip extends Sprite {
     }
 
     public void keyPressed(KeyEvent e) {
-
         int key = e.getKeyCode();
 
         if (key == KeyEvent.VK_SPACE) {
@@ -65,7 +64,6 @@ public class SpaceShip extends Sprite {
     }
 
     public void keyReleased(KeyEvent e) {
-
         int key = e.getKeyCode();
 
         if (key == KeyEvent.VK_LEFT) {

Technology/Game-2/src/Game/Sprite.java

@@ -1,5 +1,11 @@
 // Origin: https://zetcode.com/javagames/movingsprites/
 
+// SpaceShip and Missile have some methods in common.
+// We can just as well have them inherit those methods
+
+// The protected modifier specifies that the member can only be accessed within its own package
+// The private   modifier specifies that the member can only be accessed within its own class.
+
 package Game;
 
 import java.awt.Image;
@@ -14,21 +20,19 @@ public class Sprite {
     protected boolean visible;
     protected Image image;
 
+    // Set the initial position
     public Sprite(int x, int y) {
-
         this.x = x;
         this.y = y;
         visible = true;
     }
 
     protected void loadImage(String imageName) {
-
         ImageIcon ii = new ImageIcon(imageName);
         image = ii.getImage();
     }
     
     protected void getImageDimensions() {
-
         width = image.getWidth(null);
         height = image.getHeight(null);
     }    

Technology/Game-3/src/Game/Missile.java

@@ -2,6 +2,7 @@
 
 package Game;
 
+//Inherit some methods shared with class SpaceShip
 public class Missile extends Sprite {
 
     private final int BOARD_WIDTH = 800;

Technology/Game-3/src/Game/SpaceShip.java

@@ -6,6 +6,7 @@ import java.awt.event.KeyEvent;
 import java.util.ArrayList;
 import java.util.List;
 
+//Inherit some methods shared with class Missile
 public class SpaceShip extends Sprite {
 
     private int dx;
@@ -19,7 +20,6 @@ public class SpaceShip extends Sprite {
     }
 
     private void initSpaceShip() {
-
         missiles = new ArrayList<>();
         
         loadImage("src/resources/spaceship.png"); 
@@ -36,7 +36,6 @@ public class SpaceShip extends Sprite {
     }
 
     public void keyPressed(KeyEvent e) {
-
         int key = e.getKeyCode();
 
         if (key == KeyEvent.VK_SPACE) {
@@ -65,7 +64,6 @@ public class SpaceShip extends Sprite {
     }
 
     public void keyReleased(KeyEvent e) {
-
         int key = e.getKeyCode();
 
         if (key == KeyEvent.VK_LEFT) {

Technology/Game-3/src/Game/Sprite.java

@@ -1,5 +1,11 @@
 // Origin: https://zetcode.com/javagames/movingsprites/
 
+// SpaceShip and Missile have some methods in common.
+// We can just as well have them inherit those methods
+
+// The protected modifier specifies that the member can only be accessed within its own package
+// The private   modifier specifies that the member can only be accessed within its own class.
+
 package Game;
 
 import java.awt.Image;