List共通ソート
1297 ワード
//
public class SortList<E> {
public void Sort(List<E> list, final String method, final String sort) {
Collections.sort(list, new Comparator() {
public int compare(Object a, Object b) {
int ret = 0;
try {
Method m1 = ((E) a).getClass().getMethod(method, null);
Method m2 = ((E) b).getClass().getMethod(method, null);
if (sort != null && "desc".equals(sort))//
ret = m2.invoke(((E) b), null).toString().compareTo(
m1.invoke(((E) a), null).toString());
else
//
ret = m1.invoke(((E) a), null).toString().compareTo(
m2.invoke(((E) b), null).toString());
} catch (NoSuchMethodException ne) {
System.out.println(ne);
} catch (IllegalAccessException ie) {
System.out.println(ie);
} catch (InvocationTargetException it) {
System.out.println(it);
}
return ret;
}
});
}
}
呼び出し:
SortList<TbNews> sortList = new SortList<TbNews>();
// list ,getNdate ,desc
sortList.Sort(list, "getNdate", "desc");