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In the following program, Im trying to add some items to Jlist using JComboBox without any duplicates.
I managed to add items with Duplicates, As well as I managed to find duplicates using this condition (combo.getSelectedItem().equals(listModel.getElementAt(i)) )
But when i add else statement, program didnt wiork. Please help me to understand where is the error of this program,
Thank you in advance.