下面列出了怎么用java.nio.file.ClosedDirectoryStreamException的API类实例代码及写法，或者点击链接到github查看源代码。
@Test
public void testOpenDirectoryStreamsClosed() throws IOException {
Path p = fs.getPath("/foo");
Files.createDirectory(p);
try (DirectoryStream<Path> stream = Files.newDirectoryStream(p)) {
fs.close();
try {
stream.iterator();
fail();
} catch (ClosedDirectoryStreamException expected) {
}
}
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = dir.jrtfs.iteratorOf(dir, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
@Override
public boolean hasNext() {
synchronized (JrtDirectoryStream.this) {
if (isClosed)
return false;
return itr.hasNext();
}
}
@Override
public Path next() {
synchronized (JrtDirectoryStream.this) {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = dir.jrtfs.iteratorOf(dir, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
@Override
public boolean hasNext() {
synchronized (JrtDirectoryStream.this) {
if (isClosed)
return false;
return itr.hasNext();
}
}
@Override
public Path next() {
synchronized (JrtDirectoryStream.this) {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(path, filter);
} catch (IOException e) {
throw new IllegalStateException(e);
}
return new Iterator<Path>() {
private Path next;
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
throw new NoSuchElementException();
return itr.next();
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
void checkClosed() {
if (isClosed) {
throw new ClosedDirectoryStreamException();
}
}
void checkClosed() {
if (dir == null) {
throw new ClosedDirectoryStreamException();
}
}
@Nonnull
@Override
public Iterator<Path> iterator() {
final Iterator<String> childrenIt = children.iterator();
return new Iterator<Path>() {
private Path next;
private boolean findNext() {
while(childrenIt.hasNext()) {
String child = childrenIt.next();
GitPath childPath = parent.resolve(child);
try {
if(filter == null || filter.accept(childPath)) {
next = childPath;
return true;
}
} catch(IOException ignore) {
}
}
return false;
}
@Override
public boolean hasNext() throws ClosedDirectoryStreamException {
checkNotClosed();
return next != null || findNext();
}
@Nonnull
@Override
public Path next() throws ClosedDirectoryStreamException, NoSuchElementException {
checkNotClosed();
if(next != null || hasNext()) {
Path ret = next;
next = null;
return ret;
}
throw new NoSuchElementException();
}
@Override
public void remove() throws UnsupportedOperationException {
throw new UnsupportedOperationException();
}
};
}
private void checkNotClosed() throws ClosedDirectoryStreamException {
if(closed)
throw new ClosedDirectoryStreamException();
}
@Nonnull
@Override
public Iterator<Path> iterator() {
final Iterator<String> childrenIt = children.iterator();
return new Iterator<Path>() {
private Path next;
private boolean findNext() {
while(childrenIt.hasNext()) {
String child = childrenIt.next();
GitPath childPath = parent.resolve(child);
try {
if(filter == null || filter.accept(childPath)) {
next = childPath;
return true;
}
} catch(IOException ignore) {
}
}
return false;
}
@Override
public boolean hasNext() throws ClosedDirectoryStreamException {
checkNotClosed();
return next != null || findNext();
}
@Nonnull
@Override
public Path next() throws ClosedDirectoryStreamException, NoSuchElementException {
checkNotClosed();
if(next != null || hasNext()) {
Path ret = next;
next = null;
return ret;
}
throw new NoSuchElementException();
}
@Override
public void remove() throws UnsupportedOperationException {
throw new UnsupportedOperationException();
}
};
}
private void checkNotClosed() throws ClosedDirectoryStreamException {
if(closed)
throw new ClosedDirectoryStreamException();
}
protected synchronized void checkOpen() {
if (!open) {
throw new ClosedDirectoryStreamException();
}
}