Need help with javafx grid pane 8x8 checkerboard black and w

Solution

import javafx.application.Application; import javafx.geometry.HPos; import javafx.geometry.VPos; import javafx.scene.Scene; import javafx.scene.control.Control; import javafx.scene.layout.ColumnConstraints; import javafx.scene.layout.GridPane; import javafx.scene.layout.Priority; import javafx.scene.layout.RowConstraints; import javafx.scene.layout.StackPane; import javafx.stage.Stage; public class Chessboard extends Application { @Override public void start(Stage primaryStage) { GridPane root = new GridPane(); final int size = 8 ; for (int row = 0; row < size; row++) { for (int col = 0; col < size; col ++) { StackPane square = new StackPane(); String color ; if ((row + col) % 2 == 0) { color = \"white\"; } else { color = \"black\"; } square.setStyle(\"-fx-background-color: \"+color+\";\"); root.add(square, col, row); } } for (int i = 0; i < size; i++) { root.getColumnConstraints().add(new ColumnConstraints(5, Control.USE_COMPUTED_SIZE, Double.POSITIVE_INFINITY, Priority.ALWAYS, HPos.CENTER, true)); root.getRowConstraints().add(new RowConstraints(5, Control.USE_COMPUTED_SIZE, Double.POSITIVE_INFINITY, Priority.ALWAYS, VPos.CENTER, true)); } primaryStage.setScene(new Scene(root, 400, 400)); primaryStage.show(); } public static void main(String[] args) { launch(args); } }