Why Does `java.sql.SQLException: Exhausted Resultset` Occur After a `while (rs.next())` Loop?

java.sql.SQLException: Exhausted Resultset

When executing a database query, it's essential to ensure proper handling of the ResultSet object. If further attempts are made to access data after the ResultSet has been exhausted, Java may throw a "java.sql.SQLException: Exhausted Resultset" error. This error typically occurs when accessing a column value after completing the while (rs.next()) loop.

Consider the following code snippet:

if (rs != null) {
  while (rs.next()) {
    count = rs.getInt(1);
  }
  count = rs.getInt(1); // This line attempts to access a value after the ResultSet has been exhausted and will throw the error.
}

After the completion of the while loop, the ResultSet has been exhausted and no further data can be retrieved. Attempting to access the column value using rs.getInt(1) at this point will result in the "Exhausted Resultset" error.

To resolve this issue, ensure that any access to column values occurs within the while (rs.next()) loop. For example:

if (rs != null) {
  while (rs.next()) {
    int count = rs.getInt(1);
  }
}

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