Java 5で「確実に閉じる」コード | Codetter（こーどったー）

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FileInputStream in = null;
try {
  in = new FileInputStream("in.txt");
  FileOutputStream out = null;
  try {
    out = new FileOutputStream("out.txt");
    // ...ここで処理
  } finally {
    XxUtil.close(out);
  }
} finally {
  XxUtil.close(in);
}
//----------
// XxUtil
public static void close(java.io.Closable closable) throws IOException {
  if (closable != null) {
    closable.close();
  }
}
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