Add new row.Delete multi row of Jtable in Java

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Java

Hi all,

I have a problem that need anyone help.
I hava a Jtable data and now I want to add new row or delete a row or multi row,
when I add new,data on screen is not added but when I click on anycell and edit them, new row is appear,when I debug code, i saw exception at command Add.Message Error "ArrayIndexOutofBoundException"

Vector<Object> obj = new Vector<Object>("","","","","","");
obj.set(0, dataTable.getRowCount()+ 1);
model = (M6VariableTableModel) dataTable.getModel();
model.addRow(obj);

and for Delete te same.
please help me!

thanks in advance!