Second ResultSet.next() reporting true but while loop existing - sql

Question

While using a JDBC connection I am trying to perform 2 SELECT statements. The first returns a single record from a table (SQL_IBGN), and the second is designed to return multiple records from another table (SQL_ITXN) using a column (BGNREF) from the first query.
I have separate Statement and ResultSet objects for each query.
Code for Query 1:
Statement stmt = con.createStatement();
String sql = "SELECT BGNREF..... FROM SQL_IBGN WHERE BGNREF LIKE '2306009';";
ResultSet rs = stmt.executeQuery(sql);
String bgnref = null;
while (rs.next()) {
G1SQL_IBGN g1rec = new G1SQL_IBGN();
bgnref = rs.getString(1);
g1rec.setBGNREF(bgnref);
}
Code for Query 2:
if (bgnref != null) {
Statement stmt1 = con.createStatement();
String sql1 = "SELECT ACT_DESC...... SQL_ITXN WHERE BGNREF LIKE '"
+ bgnref + "';"; // Execute the SELECT statement ResultSet
ResultSet rs1 = stmt1.executeQuery(sql1); // Get result of first five records
while (rs1.next()) {
G1SQL_ITXN g1itxn = new G1SQL_ITXN();
g1itxn.setACT_DESC(rs1.getString(1));
}
}
The first query is returning a single record, however even though rs1.next() = true, the second while loop, while (rs1.next()) is not executed.