removed explicit this

ChrisMayfield · ChrisMayfield · commit d11dd8ecde5e · 2019-09-12T22:39:41.000-04:00
diff --git a/ch15/Cell.java b/ch15/Cell.java
@@ -34,38 +34,38 @@ public Cell(int x, int y, int size) {
      * @param g graphics context
      */
     public void draw(Graphics g) {
-        g.setColor(this.color);
-        g.fillRect(this.x + 1, this.y + 1, this.size - 1, this.size - 1);
+        g.setColor(color);
+        g.fillRect(x + 1, y + 1, size - 1, size - 1);
         g.setColor(Color.LIGHT_GRAY);
-        g.drawRect(this.x, this.y, this.size, this.size);
+        g.drawRect(x, y, size, size);
     }
 
     /**
      * @return true if the color is OFF
      */
     public boolean isOff() {
-        return this.color == OFF;
+        return color == OFF;
     }
 
     /**
      * @return true if the color is ON
      */
     public boolean isOn() {
-        return this.color == ON;
+        return color == ON;
     }
 
     /**
      * Sets the cell's color to OFF.
      */
     public void turnOff() {
-        this.color = OFF;
+        color = OFF;
     }
 
     /**
      * Sets the cell's color to ON.
      */
     public void turnOn() {
-        this.color = ON;
+        color = ON;
     }
 
 }
diff --git a/ch15/GridCanvas.java b/ch15/GridCanvas.java
@@ -19,10 +19,10 @@ public class GridCanvas extends Canvas {
     public GridCanvas(int rows, int cols, int size) {
 
         // build 2D array of cells
-        this.array = new Cell[rows][cols];
+        array = new Cell[rows][cols];
         for (int r = 0; r < rows; r++) {
             for (int c = 0; c < cols; c++) {
-                this.array[r][c] = new Cell(c * size, r * size, size);
+                array[r][c] = new Cell(c * size, r * size, size);
             }
         }
 

Original file line number	Diff line number	Diff line change
`@@ -19,10 +19,10 @@ public class GridCanvas extends Canvas {`
`19`	`19`	`public GridCanvas(int rows, int cols, int size) {`
`20`	`20`
`21`	`21`	`// build 2D array of cells`
`22`		`- this.array = new Cell[rows][cols];`
	`22`	`+ array = new Cell[rows][cols];`
`23`	`23`	`for (int r = 0; r < rows; r++) {`
`24`	`24`	`for (int c = 0; c < cols; c++) {`
`25`		`- this.array[r][c] = new Cell(c * size, r * size, size);`
	`25`	`+ array[r][c] = new Cell(c * size, r * size, size);`
`26`	`26`	`}`
`27`	`27`	`}`
`28`	`28`