Question

my code is :

        Statement testSt = null;
        ResultSet rset = null;
        String query = "select jid FROM playjdbc WHERE jid=56";
        try {
            testSt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
                    ResultSet.CONCUR_UPDATABLE);

            if (!testSt.execute(query)) {
                System.out.println("jid doesnt exist!");
            } else {

                rset = testSt.getResultSet();
                rset.first();
                int jidValue = rset.getInt(1); // exception cause
                System.out.println("jid is = " + jidValue);

            }

        }

rset.getInt(1) line causing this exception , but
when i ran same query in my database it returned data .

stack trace :

java.sql.SQLException: Exhausted Resultset
    at oracle.jdbc.driver.ScrollableResultSet.getOracleObject(ScrollableResultSet.java:623)
    at oracle.jdbc.driver.ScrollableResultSet.getInt(ScrollableResultSet.java:776)
    at oracle.jdbc.driver.UpdatableResultSet.getInt(UpdatableResultSet.java:666)

Answer 1

The boolean result from Statement.execute() is false if the statement returns an update count or if the statement is of a type that does not return a ResultSet. The Javadoc is slightly ambiguous in its language.

Instead of rset.first() you need to do

if (rset.next())
{
    int jidValue = rset.getInt(1); // exception cause
    System.out.println("jid is = " + jidValue);
}

rset.first() is used only when moving back to the first row in a ResultSet that is not FORWARD_ONLY.