import org.vertx.java.core.file.FileSystem; //导入依赖的package包/类
public AsyncFileWatcher(
        final EventBus eventBus,
        final FileSystem fileSystem,
        final List<Path> paths,
        final boolean readChunks,
        final int maxReadSize) {

    m_eventBus = eventBus;
    m_fileSystem = fileSystem;
    m_paths = paths;
    m_pointers = new ConcurrentHashMap();
    m_readChunks = readChunks;
    m_maxReadSize = maxReadSize;

    // Populate pointers
    for (Path path : paths) {
        m_pointers.put(path, new FilePointer(null, 0L));
    }
}
 

import org.vertx.java.core.file.FileSystem; //导入依赖的package包/类
@Override
public void handle(final Long timerId) {

    final FileSystem fs = m_fileSystem;
    final List<Path> paths = m_paths; // file paths

    for (final Path path : paths) {

        m_logger.trace("Inspecting file: {}", path);

        // Check that file exists before proceeding further...
        if (Files.exists(path)) {

            fs.props(path.toString(), new AsyncResultHandler<FileProps>() {

                @Override
                public void handle(final AsyncResult<FileProps> ar) {
                    handleFileProps(ar, path);
                }
            });
        }
    }
}
 

import org.vertx.java.core.file.FileSystem; //导入依赖的package包/类
@Override
public FileSystem fileSystem() {
  return null;
}
 

import org.vertx.java.core.file.FileSystem; //导入依赖的package包/类
@Override
public FileSystem fileSystem() {
    return null;
}
 

import org.vertx.java.core.file.FileSystem; //导入依赖的package包/类
public FileSystem getFileSystem() {
    return vertx.fileSystem();
}
 

import org.vertx.java.core.file.FileSystem; //导入依赖的package包/类
private void cleanWebjarsDir() {
	FileSystem fileSystem = vertx.fileSystem();
	if (fileSystem.existsSync(WEBJARS_DIR)) {
		fileSystem.deleteSync(WEBJARS_DIR, true);
	}
}
 

import org.vertx.java.core.file.FileSystem; //导入依赖的package包/类
/**
 * Returns the Vert.x file system object.
 *
 * @return Vert.x file system
 */
private FileSystem fileSystem() {
    return m_filter.getVertx().fileSystem();
}