Once again: did you initzialize num and row ?
When I design your example, I get: ... scriptTable.setModel(new javax.swing.table.DefaultTableModel( new Object [][] { {null, null, null, null}, {null, null, null, null}, {null, null, null, null}, {null, null, null, null} }, new String [] { "Title 1", "Title 2", "Title 3", "Title 4" } )); ... Where are your nulls for new Object[][] ? Helmut Am 26.06.2019 um 19:45 schrieb mmo...@me.com.INVALID: > scriptTable.getModel().setValueAt(num, row, 2)
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