Netbeans：Java Swing：如何更改JComboBox Items的数据类型

Question

I added a JComboBox to my JFrame inside the Design View and the datatype of its items is by default String:

private javax.swing.JComboBox<String> items;

The variable declaration is automatically added to the Source and cannot be edited. Can someone tell me how I change the datatype of the items inside the Design View? Or do I have to create the JComboBox Component inside the Source myself?

(I'm using NetBeans IDE 8.2; Java Version 1.8)

Answer 1

In Properties -> Code -> Type Parameters