[JAVA] [Personal memorandum] Eclipse button placement control object generation

◎ Execution environment
・ Windows7
・ Eclipse4.6 Neon
◎ Code
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;


public class Main extends Application {
	public void start(Stage stage){
		stage.setWidth(500);　　//Specify width as 500
		stage.setHeight(300);　　//Specify height as 300


		Button button1 = new Button("1");　　//Generate 6 button controls
		Button button2 = new Button("2");
		Button button3 = new Button("3");
		Button button4 = new Button("4");
		Button button5 = new Button("5");
		Button button6 = new Button("6");


		button1.setPrefSize(300,100);　　//Width 300,Specify height as 100
		button2.setPrefSize(300,100);
		button3.setPrefSize(300,100);
		button4.setPrefSize(300,100);
		button5.setPrefSize(100,50);　　//Width 100,Specify height as 50
		button6.setPrefSize(100,50);

		GridPane subPane = new GridPane();　　　//Create GridPane object
		subPane.setConstraints(button4,0,0);　　//0,Placement specified at position 0
		subPane.setConstraints(button5,1,0);　　//1,Placement specified at position 0
		subPane.setConstraints(button6,1,1);　　//1,Placement designation at position 1


		subPane.getChildren().addAll(button4,button5,button6);
　　　　　　
　　　　　//4,5,6 added to subPane

		GridPane root = new GridPane();　　　//Create an object that will be the root pane
		GridPane.setConstraints(button1,0,0);　　//Specify button placement
		GridPane.setConstraints(button2,1,0);
		GridPane.setConstraints(button3,0,1);
		GridPane.setConstraints(subPane,1,1);　　//Specify the position of subPane

		root.getChildren().addAll(button1,button2,button3,subPane);

　　　　　//SubPane in the root pane,Add everything

		Scene scene = new Scene(root);
　　　　　//Create a scene object


		stage.setScene(scene);　　//Place the scene on the stage
		stage.show();　　　　　　　//Show application window
	}






	public static void main(String[] args){
		launch();
	}
}