tab键弹出对话框

//tab键弹出下拉框
((ComboBoxCellEditor) editor).setActivationStyle(ComboBoxCellEditor.DROP_DOWN_ON_TRAVERSE_ACTIVATION |
ComboBoxCellEditor.DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION |
ComboBoxCellEditor.DROP_DOWN_ON_MOUSE_ACTIVATION |
ComboBoxCellEditor.DROP_DOWN_ON_KEY_ACTIVATION);

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