import java.util.*;
import javafx.application.*;
import javafx.scene.*;
import java.util.*;
import javafx.application.*;
import javafx.scene.*;
import javafx.stage.*;
import javafx.geometry.*;
import javafx.scene.shape.*;
import javafx.stage.Stage;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;

public class Main extends Application{

	public void start(Stage primaryStage)
	{
		GridPane pane=new GridPane();
		pane.setAlignment(Pos.CENTER);
		pane.setPadding(new Insets (11.5 , 12.5,  13.5 , 14.5));
		pane.setHgap(5.5);
		pane.setVgap(5.5);
		
		pane.add(new Label("Account"), 0, 0);
		pane.add(new TextField(), 1, 0);
		pane.add(new Label("PassWord"), 0, 1);
		pane.add(new TextField(),1, 1);
		pane.add(new Label("MailBox /PostBox"), 0,2);
		pane.add(new TextField(),1, 2);
		
		Button button=new Button("Confirm");
		pane.add(button, 1, 3);
		GridPane.setHalignment(button,HPos.RIGHT);
		
		Scene scene =new Scene(pane);
		primaryStage.setTitle("Entry.java");
		primaryStage.setScene(scene);
		primaryStage.show();
		
		
		
	}	
	public static void main(String[] args) 
	{
		// TODO Auto-generated method stub
	    Application.launch(args);
	}
	
}
//用命令行的话，main函数可以不写，	
	public static void main(String[] args) 
	{
		// TODO Auto-generated method stub
	    Application.launch(args);
	}

}

代码运行结果：

由于自己笔记本目前是jdk 13.02版本的，好像…那啥，一直报错，弄好了、有的话，会补的，在jdk 1.8 0.25（记得不太清这个版本）上，运行是有实际界面的。…

END