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1: String query = "select * from userlist";
2: try
3: {Driver driver = (Driver)new postgres95.PGDriver();
4: Connection con = DriverManager.getConnection(DRIVER, USER, PASSWD);
5: checkForWarning(con.getWarnings());
6: Statement statement = con.createStatement();
7: ResultSet resultset = statement.executeQuery(query);
8: boolean flag = resultset.next();
9: }catch...........
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