Generic collection ordering, sorted by an attribute of an entity class object

Generic collection ordering, sorted by an attribute of an entity class object

Import Java.util.arraylist;import java.util.collections;import Java.util.comparator;import Java.util.List;import Java.lang.reflect.method;import Java.lang.reflect.invocationtargetexception;import sy.model.aite.analysis.selftestanalysis;/** * Generic collection ordering, sorted by an attribute of an entity class object * @author Admin * * @param <E> */public class so rtlist<e> {public void sort (list<e> list, final string method, final string sort) {Collections.sort (list, new Comparator<object> () {public int compare (object A, object b) {int ret = 0;try {Method m1 = ((E) a). GetClass (). Getmet Hod (method, NULL); Method m2 = ((E) b). GetClass (). GetMethod (method, NULL), if (sort! = null && "desc". Equals (sort))//REVERSE RET = M2.invok E ((((e) b), null). ToString (). CompareTo (M1.invoke (((e) a), null). ToString ()), else//positive-order 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;});} public static void Main (string[] args) {list<selftestanalysis> List = new arraylist<selftestanalysis> (); Selftestanalysis st1 = new Selftestanalysis () st1.setstatus ("OK"); St1.setplatenumber ("license plate"); St1.setforsort (2); List.add (ST1); Selftestanalysis st2 = new Selftestanalysis () st2.setstatus ("NG"); St1.setplatenumber ("license plate"); St2.setforsort (3); List.add (ST2); Selftestanalysis st3 = new Selftestanalysis () st3.setstatus ("OFF"); St1.setplatenumber ("license plate"); St3.setforsort (1); List.add (ST3); Selftestanalysis st4 = new Selftestanalysis () st4.setstatus ("OFF"); St1.setplatenumber ("license plate"); St4.setforsort (1); List.add (ST4); SYSTEM.OUT.PRINTLN ("default sort"); for (Selftestanalysis test:list) {System.out.println (test.tostring ());}        System.out.println ();        sortlist<selftestanalysis> sort = new sortlist<selftestanalysis> ();        System.out.println ("Getnum in desc order"); Sort.        Sort (list, "Getforsort", "desc"); for (selftestAnalysis Test:list) {System.out.println (test.tostring ());}                System.out.println ();        SYSTEM.OUT.PRINTLN ("getnum asc sort"); Sort.        Sort (list, "GetStatus", null); for (Selftestanalysis test:list) {System.out.println (test.tostring ());}}}

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Generic collection ordering, sorted by an attribute of an entity class object