Added safety checks and cleaned up code

src/Mouse.java

@@ -1,4 +1,10 @@
-
+/* Reads a file of coordinates
+ * 
+ * 
+ * Testing:
+ * 	- Only valid coordinates are added (through regex)
+ *  - 
+ */
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileReader;
@@ -21,32 +27,33 @@ public class Mouse {
 			File file = new File(path);
 			FileReader fileReader = new FileReader(file);
 			BufferedReader bufferedReader = new BufferedReader(fileReader);
-			Pattern linePattern = Pattern.compile("x:[0-9]* y:[0-9]* [0-9]*");
+			Pattern linePattern = Pattern.compile("[0-9]*,[0-9]*,[0-9]*$");
 			
 			String line;
 			Point lastPoint = new Point(0, 0, 0);
 			int numberOfRepeats = 0;
 			ArrayList<Point> currentPath = new ArrayList<Point>();
 			currentPath.add(lastPoint);
-			
-			//int count = 0;
+
 			while ((line = bufferedReader.readLine()) != null) {
 				if (!isLineValid(line, linePattern)) {
 					System.out.println(line + " does not match regex -- SKIPPING");
 					continue;
 				}
-				//count += 1;
-				//if (count > 1000) break;
+
 				Point point = getPointFromLine(line);
+				if (!point.isValid()) {
+					continue;
+				}
 				
-				if (point.getX() == lastPoint.getX() && point.getY() == lastPoint.getY()) {
-					numberOfRepeats += 1;
-					//System.out.println("Mouse at same point...");
+				if (point.hasSameLocation(lastPoint)) {
+					numberOfRepeats++;
 					if (numberOfRepeats == 20) {
-						//System.out.println("Creating new path!");
-						//System.out.println("Current path length:" + currentPath.size());
+						if (currentPath.size() < 5) {
+							continue;
+						}
 						MousePath newPath = new MousePath(currentPath);
-						mousePaths.add(newPath);
+						mousePaths.add(newPath); // Deep copies
 						currentPath.clear();
 					}
 				}
@@ -56,7 +63,6 @@ public class Mouse {
 				}
 				lastPoint = point;
 			}
-			
 			fileReader.close();
 		} catch (IOException e) {
 			e.printStackTrace();
@@ -72,12 +78,8 @@ public class Mouse {
 	}
 	
 	private Point getPointFromLine(String line) {
-		String[] parts = line.split(Pattern.quote(":"));
-		/*System.out.println(line);
-		System.out.println(parts[0]);
-		System.out.println(parts[1]);
-		System.out.println(parts[2]);*/
-		return new Point(0, 0, 0);
+		String[] parts = line.split(Pattern.quote(","));
+		return new Point(Integer.parseInt(parts[0]), Integer.parseInt(parts[1]), Integer.parseInt(parts[2]));
 	}
 	
 	public void displayPaths() {
@@ -85,5 +87,6 @@ public class Mouse {
 			path.display();
 			System.out.println("----------------------------------------------------------");
 		}
+		System.out.println("There are " + mousePaths.size() + " paths.");
 	}
 }

src/MousePath.java

@@ -1,3 +1,14 @@
+/*
+ * Represents each mouse path as an ArrayList of points.
+ * 
+ * Testing: 
+ * 	- Each point must be valid.
+ *  - Timespan is reasonable
+ *  - Does not go off screen
+ *  
+ *  
+ */
+
 import java.util.ArrayList;
 
 public class MousePath {
@@ -6,6 +17,7 @@ public class MousePath {
 	private int numPoints;
 	private Point startingPoint;
 	private Point endingPoint;
+	private int timespan;
 		
 	public MousePath(ArrayList<Point> _path)
 	{
@@ -15,9 +27,9 @@ public class MousePath {
 			path.add(pointCopy);
 		}
 		numPoints = path.size();
-		System.out.println("Created copy with size: " + path.size());
-		//startingPoint = path.get(0);
-		//endingPoint = path.get(numPoints - 1);
+		startingPoint = path.get(0);
+		endingPoint = path.get(numPoints - 1);
+		timespan = endingPoint.getTime() - startingPoint.getTime();
 	}
 	
 	public ArrayList<Point> getPath() {
@@ -32,5 +44,6 @@ public class MousePath {
 		for (Point p : path) {
 			System.out.println("(" + p.getX() + ", " + p.getY() + "), " + p.getTime());
 		}
+		System.out.println("Length:" + numPoints + ", Timespan:" + timespan);
 	}
 }

src/Point.java

@@ -25,4 +25,27 @@ public class Point {
 	{
 		return time;
 	}
+	
+	public boolean hasSameLocation(Point p2) {
+		return (this.x == p2.getX() && this.y == p2.getY());
+	}
+	
+	@Override
+	public boolean equals(Object obj) {
+	    if (obj == null) {
+	        return false;
+	    }
+	    if (!(obj instanceof Point)) {
+            return false;
+        }
+         
+	    Point p = (Point) obj;
+        
+       // Compare the data members and return accordingly 
+       return (this.x == p.x && this.y == p.y && this.time == p.time);
+	}
+	
+	public boolean isValid() {
+		return (x >= 0 && x < 1920 && y >= 0 && y < 1920 && time >= 0);
+	}
 }