将项目从地图添加到 JComboBox

Question

抱歉，我没有任何代码，但只需要一些建议，有没有一种方法可以将 Map 中的项目添加到 JComboBox，以便在添加和删除新项目时动态更改？

Answer 1

要更新您的组合框，您可以使用类似的东西。// due to order problem, transfer of elements from map to combo box have sence // for ordered maps, like LinkedHashMap or TreeMapMap<String, String> strMap = new LinkedHashMap<>();// fill map...JComboBox<String> combo = new JComboBox<>();// some code...// now update the combo box contentcombo.setModel(new DefaultComboBoxModel<>(strMap.values().toArray(new String[0])));

Answer 2

您可以直接使用哈希图的值...yourMap.values().forEach((value)->&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;Do&nbsp;whatever&nbsp;your&nbsp;want&nbsp;with&nbsp;each&nbsp;value.&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;});