import com.sun.tools.javac.nio.PathFileManager; //导入依赖的package包/类
public PathDocFileFactory(Configuration configuration) {
    super(configuration);
    fileManager = (PathFileManager) configuration.getFileManager();

    if (!configuration.destDirName.isEmpty()
            || !fileManager.hasLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT)) {
        try {
            String dirName = configuration.destDirName.isEmpty() ? "." : configuration.destDirName;
            Path dir = fileManager.getDefaultFileSystem().getPath(dirName);
            fileManager.setLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT, Arrays.asList(dir));
        } catch (IOException e) {
            throw new DocletAbortException(e);
        }
    }

    destDir = fileManager.getLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT).iterator().next();
}
 

import com.sun.tools.javac.nio.PathFileManager; //导入依赖的package包/类
/**
 * Verify that an alternate file manager can be specified:
 * in this case, a PathFileManager.
 */
@Test
public void testFileManager() throws Exception {
    JavaFileObject srcFile = createSimpleJavaFileObject();
    DocumentationTool tool = ToolProvider.getSystemDocumentationTool();
    PathFileManager fm = new JavacPathFileManager(new Context(), false, null);
    Path outDir = getOutDir().toPath();
    fm.setLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT, Arrays.asList(outDir));
    Iterable<? extends JavaFileObject> files = Arrays.asList(srcFile);
    DocumentationTask t = tool.getTask(null, fm, null, null, null, files);
    if (t.call()) {
        System.err.println("task succeeded");
        checkFiles(outDir, standardExpectFiles);
    } else {
        throw new Exception("task failed");
    }
}
 

import com.sun.tools.javac.nio.PathFileManager; //导入依赖的package包/类
/**
 * Verify that exceptions from a bad file manager are thrown as expected.
 */
@Test
public void testBadFileManager() throws Exception {
    JavaFileObject srcFile = createSimpleJavaFileObject();
    DocumentationTool tool = ToolProvider.getSystemDocumentationTool();
    PathFileManager fm = new JavacPathFileManager(new Context(), false, null) {
        @Override
        public Iterable<JavaFileObject> list(Location location,
                String packageName,
                Set<Kind> kinds,
                boolean recurse)
                throws IOException {
            throw new UnexpectedError();
        }
    };
    Path outDir = getOutDir().toPath();
    fm.setLocation(DocumentationTool.Location.DOCUMENTATION_OUTPUT, Arrays.asList(outDir));
    Iterable<? extends JavaFileObject> files = Arrays.asList(srcFile);
    DocumentationTask t = tool.getTask(null, fm, null, null, null, files);
    try {
        t.call();
        error("call completed without exception");
    } catch (RuntimeException e) {
        Throwable c = e.getCause();
        if (c.getClass() == UnexpectedError.class)
            System.err.println("exception caught as expected: " + c);
        else
            throw e;
    }
}