**15.6(两个消息交替出现)

• 编写一个程序，当单击鼠标时面板上交替显示两个文本"Java is fun"和"Java is powerful"

代码展示：编程练习题15_6TwoInfo.java

package chapter_15;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class 编程练习题15_6TwoInfo extends Application{
	@Override
	public void start(Stage primaryStage) throws Exception {
		StackPane stackPane = new StackPane();
		Text text = new Text("Java is fun");
		stackPane.getChildren().add(text);
		stackPane.setOnMousePressed(e ->{
			if(text.getText() == "Java is fun")
				text.setText("Java is powerful");
			else text.setText("Java is fun");
		});
		Scene scene = new Scene(stackPane, 300, 150);
        primaryStage.setTitle("编程练习题15_6TwoInfo");
        primaryStage.setScene(scene);
        primaryStage.show();
	}
	public static void main(String[] args) {
		Application.launch(args);
	}
}

• 结果展示