I cannot remove my warnings with unchecked cast. I believe this is very strange because I have added the @SuppressWarnings("unchecked") annotation on the method but the Javac still showing the warnings.
[unchecked] unchecked cast (List<Integer>) getObject(LIST);
return (List<Integer>) getObject(LIST);
required: List<Integer>
found: Object
I have create an Example, It throws 2 warnings. I'm using Oracle JDK 1.7 update 79.
package strange;
import java.util.List;
public class Strange implements Constants {
//Throw Warning
@SuppressWarnings("unchecked")
protected List<Integer> getList() {
return (List<Integer>) getObject(LIST);
}
@SuppressWarnings("unchecked")
protected List<Integer> getList2() {
return (List<Integer>) getObject(LIST);
}
//Throw Warning
@SuppressWarnings("unchecked")
protected List<Integer> getOtherList() {
return (List<Integer>) getObject(OTHER);
}
protected Object getObject(String key) {
return new Object();
}
}
interface Constants {
public static final String LIST = "list";
public static final String OTHER = "other";
}
Thanks.
