type JList does not take parameter type <String>

问题

When I try to compile some code I keep getting these errors:

CCC.java:21: type javax.swing.JList does not take parameters
JList<String> list;

or:

CCC.java:30: type javax.swing.DefaultListModel does not take parameters
DefaultListModel<String> jobs, DefaultListModel<String> closJ) throws HeadlessException {

I have about 26 of the same error when I try to remove the section i get about 150 lines of errors can anyone help please.

回答1:

Generics were added to JList in Java 7. Here's an example from the JList documentation:

String[] data = {"one", "two", "three", "four"};
JList<String> myList = new JList<String>(data);

Make sure you're using Java 7+.

回答2:

Assuming you are using Java 1.6

DefaultListModel is not generic class, you can't instantiate it with by passing concrete parameters, same for JList also.

Just change your code like:

JList list;

and

 DefaultListModel jobs

来源：https://stackoverflow.com/questions/12879342/type-jlist-does-not-take-parameter-type-string