Java:制作棋盘 (8x8)

Question

我在第一列中得到了棋盘图案；但是，我无法让它继续遍历整个董事会。这只是为了温习我作为程序员的技能。让我知道我可以改进什么!(有问题的代码)

@Override
public void start(Stage primaryStage){
    //Creates pane
    AnchorPane pane = new AnchorPane();
    Scene scene = new Scene(pane);
    primaryStage.setScene(scene);

    int columns = 8, row = 8, horizontal = 125, vertical = 125;
    Rectangle rectangle = null;
    for(int i = 0; i < columns; i++){
        for(int j = 0; j < row; j++){
            //creates the rectangles, and outlines them
            rectangle = new Rectangle(horizontal*j, vertical*i, horizontal, vertical);
            rectangle.setStroke(Color.WHITE);

                    if ( j+i % 2 == 0 ) {
                        rectangle.setFill(Color.WHITE);
                    } else {
                        rectangle.setFill(Color.BLACK);
                    }//end else

            //put rectangles into the pane
            pane.getChildren().add(rectangle);
        }//end for-loop j
    }//end for-loop i

    //create a scene and place it in the stage
    scene.setRoot(pane);
    primaryStage.setTitle("Checkerboard");
    primaryStage.show();
}//end primaryStage

Answer 1

% 的优先级高于 + 并且首先被评估。使用括号获得正确的计算结果。

if (((j + i) % 2) == 0) {