如何在java中将字符串集合转换为字符串数组

How to convert collection of strings to string array in java

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我正试图把attributeNames，即collection of string，传递给接受string array的方法setColumnNames。

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public Map<String, String> getAttributes(String rowKey, Collection<String> attributeNames, String columnFamily) {

try {

SliceQuery<String, String, String> query = HFactory.createSliceQuery(keyspace, StringSerializer.get(), StringSerializer.get(), StringSerializer.get()).
setKey(rowKey).setColumnFamily(columnFamily).setColumnNames(attributeNames);

} catch (HectorException e) {
LOG.error("Exception in CassandraHectorClient::getAttributes" +e+", RowKey =" +rowKey+", Attribute Names =" +attributeNames);
}

return null;
}

setColumnNames的定义

1	SliceQuery<K, N, V> setColumnNames(N... columnNames);

每次我都有例外-

1	The method setColumnNames(String...) in the type SliceQuery<String,String,String> is not applicable for the arguments (Collection<String>)

如何将字符串的集合转换为Java中的字符串数组？有什么想法吗？