My problem is that i want each selected combobox appear in jtable when the person click on add button

My code here only choose one, once i choose another book from combobox it remove the old from jtable and add the new one.

How should i fix it?

public void actionperformed(java.awt.event.ActionEvent evt) i string n=( string) combosox. getselecteditem(); string sql="sgLecr book_id, Titlo, Drice From Book table WHBRk Book table.titlo=" "+n+",n Dreparedstatoment st=con.preparestatement (sq1); rsmt.oxecuteguery (sq1) Resultset rs=st, executequery (sqq1); table. setmodel (Dbutils. resultsetToTableModel(rs)) 1 catch (SQLException x ) x printstackTrace ()