[java] fix #4177 for java as well

genjava.ml

@@ -205,8 +205,6 @@ struct
 				| TCall( ({ eexpr = TField( (_ as ef), FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = ("ffloor" as f) }) ) } as fe), p)
 				| TCall( ({ eexpr = TField( (_ as ef), FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = ("fceil" as f) }) ) } as fe), p) ->
 						Type.map_expr run { e with eexpr = TCall({ fe with eexpr = TField(ef, FDynamic (String.sub f 1 (String.length f - 1)))	}, p) }
-				| TCall( ({ eexpr = TField( (_ as ef), FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = ("fround") }) ) } as fe), p) ->
-						Type.map_expr run { e with eexpr = TCall({ fe with eexpr = TField(ef, FDynamic "rint")	}, p) }
 				| TCall( { eexpr = TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "floor" }) ) }, _)
 				| TCall( { eexpr = TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "round" }) ) }, _)
 				| TCall( { eexpr = TField( _, FStatic({ cl_path = (["java";"lang"], "Math") }, { cf_name = "ceil" }) ) }, _) ->

std/java/_std/Math.hx

@@ -42,7 +42,9 @@
 	static function floor(v:Float):Int;
 	static function ceil(v:Float):Int;
 	static function atan(v:Float):Float;
-	static function fround(v:Float):Float;
+	inline static function fround(v:Float):Float {
+		return ffloor(v + 0.5);
+	}
 	static function ffloor(v:Float):Float;
 	static function fceil(v:Float):Float;
 	static function asin(v:Float):Float;