Files
2015-12-02 15:42:02 +01:00

26 lines
444 B
Java

import java.util.LinkedList;
import java.util.List;
class MyTest {
private Test<LinkedList> alist;
public Test<LinkedList> getAlist() {
return alist = create(Test::new, alist);
}
private <T> T create(CreateCallback<T> callback, T defaultVal) {
if (defaultVal == null) {
return callback.create();
}
return defaultVal;
}
interface CreateCallback<T> {
T create();
}
class Test<E extends List> {}
}