问题
String[] boxOptions = {"1","2","4","8","16","20","40","100","400"};
JComboBox box = new JComboBox(boxOptions);
I had these exact lines of code in my program before, and wasn't getting this error. I did a bit of searching and the results I found are going a bit over my head. Any ideas?
The error is:
JComboBox is a raw type. References to generic type JComboBox<E> should be parameterized
回答1:
You can use:
JComboBox<String> box = new JComboBox<>(boxOptions);
This happens because JComboBox
is now a generic class.
回答2:
As of Java 7, generics were introduced into JComboBox component. Maybe you were using Java6 before.
You should add JComboBox<String>
to the second line there.
来源:https://stackoverflow.com/questions/20596020/jcombobox-is-a-raw-type-references-to-generic-type-jcomboboxe-should-be-param