JavaFX 类 ProgressIndicator用法及代码示例

// Java program to illustrate the use of Progress Indicator 
import javafx.application.Application; 
import javafx.scene.Scene; 
import javafx.scene.control.*; 
import javafx.scene.layout.*; 
import java.io.*; 
import javafx.event.ActionEvent; 
import javafx.event.EventHandler; 
import javafx.scene.control.Label; 
import javafx.stage.Stage; 
import java.net.*; 
public class progressi extends Application { 
  
    static double ii = 0; 
  
    // launch the application 
    public void start(Stage s) throws Exception 
    { 
        // set title for the stage 
        s.setTitle("creating progressIndicator"); 
  
        // create a progress indicator 
        ProgressIndicator pb = new ProgressIndicator(); 
  
        // create a tile pane 
        TilePane r = new TilePane(); 
  
        // action event 
        EventHandler<ActionEvent> event = new EventHandler<ActionEvent>() { 
            public void handle(ActionEvent e) 
            { 
                // set progress to different level of progressindicator 
                ii += 0.1; 
                pb.setProgress(ii); 
            } 
  
        }; 
  
        // creating button 
        Button b = new Button("increase"); 
  
        // set on action 
        b.setOnAction(event); 
  
        // add button 
        r.getChildren().add(pb); 
        r.getChildren().add(b); 
  
        // create a scene 
        Scene sc = new Scene(r, 200, 200); 
  
        // set the scene 
        s.setScene(sc); 
  
        s.show(); 
    } 
  
    public static void main(String args[]) 
    { 
        // launch the application 
        launch(args); 
    } 
}