Java-Buddy

The previous post describe how to "Get file info using java.io.File", this one have similar function using java.nio.file.Path and java.nio.file.Files.

Please note that JavaFX FileChooser return a java.io.File object. To obtain coresponding java.nio.file.Path object, call its toPath() method.

package javafx_niofile;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;
import javafx.stage.FileChooser;
import javafx.stage.Stage;
/**
 *
 * @web http://java-buddy.blogspot.com/
 */
public class JavaFX_NIOFile extends Application {
 
 Label label;
 
 @Override
 public void start(Stage primaryStage) {
 Button btnLoad = new Button();
 btnLoad.setText("Load File");
 btnLoad.setOnAction(btnLoadEventListener);
 
 label = new Label();
 
 VBox rootBox = new VBox();
 rootBox.getChildren().addAll(btnLoad, label);
 
 Scene scene = new Scene(rootBox, 400, 350);
 primaryStage.setTitle("java-buddy.blogspot.com");
 primaryStage.setScene(scene);
 primaryStage.show();
 }
 public static void main(String[] args) {
 launch(args);
 }
 
 EventHandler<ActionEvent> btnLoadEventListener
 = new EventHandler<ActionEvent>(){
 
 @Override
 public void handle(ActionEvent t) {
 FileChooser fileChooser = new FileChooser();
 
 //Set extension filter
 FileChooser.ExtensionFilter extFilter 
 = new FileChooser.ExtensionFilter("ALL files (*.*)", "*.*");
 fileChooser.getExtensionFilters().add(extFilter);
 
 //Show open file dialog, return a java.io.File object
 File file = fileChooser.showOpenDialog(null);
 
 //obtain a java.nio.file.Path object 
 Path path = file.toPath();
 
 String fileInfo = "Path = " + path.toString() + "\n\n";
 
 fileInfo += "FileSystem: " + path.getFileSystem() + "\n\n";
 
 fileInfo += "FileName = " + path.getFileName() + "\n"
 + "Parent = " + path.getParent() + "\n\n"
 + "isExecutable(): " + Files.isExecutable(path) + "\n"
 + "isReadable(): " + Files.isReadable(path) + "\n"
 + "isWritable(): " + Files.isWritable(path) + "\n";
 try {
 fileInfo += "getLastModifiedTime(): " + Files.getLastModifiedTime(path, LinkOption.NOFOLLOW_LINKS) + "\n"
 + "size(): " + Files.size(path) + "\n";
 } catch (IOException ex) {
 Logger.getLogger(JavaFX_NIOFile.class.getName()).log(Level.SEVERE, null, ex);
 }
 label.setText(fileInfo);
 }
 };
 
}

Related:
- Access subpath of java.nio.file.Path

Post a Comment

[フレーム]