import org.apache.hadoop.fs.swift.exceptions.SwiftConnectionClosedException; //导入依赖的package包/类
@Override
public void seek(long pos) throws IOException {
  if (pos < 0) {
    throw new EOFException(FSExceptionMessages.NEGATIVE_SEEK);
  }
  if (in == null) {
    throw new SwiftConnectionClosedException(FSExceptionMessages.STREAM_IS_CLOSED);
  }
  super.seek(pos);
}
 

import org.apache.hadoop.fs.swift.exceptions.SwiftConnectionClosedException; //导入依赖的package包/类
@Override
public void seek(long pos) throws IOException {
  if (pos < 0) {
    throw new IOException("Negative position");
  }
  if (in == null) {
    throw new SwiftConnectionClosedException("Stream closed");
  }
  super.seek(pos);
}
 

import org.apache.hadoop.fs.swift.exceptions.SwiftConnectionClosedException; //导入依赖的package包/类
/**
 * Assume that the connection is not released: throws an exception if it is
 * @throws SwiftConnectionClosedException
 */
private synchronized void assumeNotReleased() throws SwiftConnectionClosedException {
  if (released || inStream == null) {
    throw new SwiftConnectionClosedException(reasonClosed);
  }
}
 

import org.apache.hadoop.fs.swift.exceptions.SwiftConnectionClosedException; //导入依赖的package包/类
/**
 * check that the output stream is open
 *
 * @throws SwiftException if it is not
 */
private synchronized void verifyOpen() throws SwiftException {
  if (closed) {
    throw new SwiftConnectionClosedException();
  }
}
 

import org.apache.hadoop.fs.swift.exceptions.SwiftConnectionClosedException; //导入依赖的package包/类
/**
 * Assume that the connection is not closed: throws an exception if it is
 * @throws SwiftConnectionClosedException
 */
private void verifyOpen() throws SwiftConnectionClosedException {
  if (httpStream == null) {
    throw new SwiftConnectionClosedException(reasonClosed);
  }
}