## Friday, 23 December 2016

### Chapter 14 Exercise 5, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

14.5 (Characters around circle)
Write a program that displays a string Welcome to Java around
the circle, as shown in Figure 14.44b. Hint: You need to display
each character in the right location with appropriate
rotation using a loop.

import javafx.application.Application;
import javafx.geometry.Point2D;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class Exercise_05 extends Application{

@Override
public void start(Stage primaryStage) {

Pane pane = new Pane();
String[] java = "Welcome to Java".split("");
Font font = Font.font("Times New Roman", FontWeight.EXTRA_BOLD, 30);

// http://en.wikipedia.org/wiki/Circle#Equations
// The equation can be written in parametric form using the
// trigonometric functions sine and cosine as
// x = a+r * cos t
// y = b+r * sin t
// where t is a parametric variable in the range 0 to 2π,

Point2D center = new Point2D(200, 200);
double angle = 0;
double rotate = 90;
for (int i = 0; i < java.length; i++, angle += 22, rotate += 22) {
Text text = new Text(x, y,java[i]);
text.setRotate(rotate);
text.setFont(font);

}

Scene scene = new Scene(pane, 400, 400);
primaryStage.setTitle("Welcome to Java");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
Application.launch(args);
}
}