iteration 01 checkstyle fix PascalCase

src/main/java/cz/muni/fi/pb162/project/geometry/Vertex2D.java

@@ -5,23 +5,23 @@ package cz.muni.fi.pb162.project.geometry;
  * @author Georgii Aksenov <xaksenov@fi.muni.cz>
  */
 public class Vertex2D {
-    private double X = 0;
-    private double Y = 0;
+    private double x = 0;
+    private double y = 0;
 
     public double getX() {
-        return X;
+        return x;
     }
 
     public void setX(double x) {
-        X = x;
+        this.x = x;
     }
 
     public double getY() {
-        return Y;
+        return y;
     }
 
     public void setY(double y) {
-        Y = y;
+        this.y = y;
     }
 
     /**
@@ -30,7 +30,7 @@ public class Vertex2D {
      * @return string representation.
      */
     public String getInfo() {
-        return String.format("[%.1f, %.1f]", X, Y);
+        return String.format("[%.1f, %.1f]", x, y);
     }
 
     /**
@@ -39,7 +39,7 @@ public class Vertex2D {
      * @return sum of coordinates.
      */
     public double sumCoordinates() {
-        return X + Y;
+        return x + y;
     }
 
     /**
@@ -48,7 +48,7 @@ public class Vertex2D {
      * @param vertex is added to this vertex.
      */
     public void move(Vertex2D vertex) {
-        X += vertex.X;
-        Y += vertex.Y;
+        x += vertex.x;
+        y += vertex.y;
     }
 }