8.5.8 first()
- Organization of this subsection
(1) Function
This method moves the cursor to the first row in the ResultSet object.
(2) Format
public synchronized boolean first() throws SQLException
(3) Arguments
None.
(4) Return value
If the number of rows in the result set is 0, the method returns true; if not, the method returns false.
(5) Exceptions
The JDBC driver throws an SQLException in the following cases:
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This ResultSet object is closed.
This includes the case where the ResultSet object was closed because the Statement object that created this ResultSet object was closed.
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The Connection used to create the Statement object that created this ResultSet object has been closed.
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The type of this ResultSet object is ResultSet.TYPE_FORWARD_ONLY.
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The ResultSet object has become invalid due to transaction settlement.
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A database access error occurs.