public void executeUpdate(String sql) { try {
smt = conn.createStatement();
int rowCount = smt.executeUpdate(sql);
return rowCount; //这是个void方法,没有返回值,怎么能返回rowCount呢??
}
catch(SQLException ex) {
System.err.println("aq.executeUpdate: " + ex.getMessage());
}
return null;
}
smt = conn.createStatement();
int rowCount = smt.executeUpdate(sql);
return rowCount; //这是个void方法,没有返回值,怎么能返回rowCount呢??
}
catch(SQLException ex) {
System.err.println("aq.executeUpdate: " + ex.getMessage());
}
return null;
}
public int executeUpdate(String sql) { try {
smt = conn.createStatement();
int rowCount = smt.executeUpdate(sql);
return rowCount;
}
catch(SQLException ex) {
System.err.println("aq.executeUpdate: " + ex.getMessage());
}
return -1;
}