从javaeye上看到一篇很有趣的文章<<奇技淫巧>>，链接在这里
????static?double?getOverall(Details[]?arr?,String?method)
{
????????double?sum?=?0;
????????try{????????????ScriptEngineManager?factory?=?new?ScriptEngineManager();????????????ScriptEngine?engine?=?factory.getEngineByName("JavaScript");????????????for(int?i=0;i<arr.length;i++){????????????????engine.put("obj",?arr[i]);????????????????Object?obj?=?engine.eval("obj."+method);????????????????if?(obj?instanceof?Double){????????????????????sum?+=?((Double)obj).doubleValue();
????????????????}????????????}????????}catch(Exception?e){????????????e.printStackTrace();????????}????????return?sum;
????}
????????static?double?getOverallBalance(Details[]?arr)?{????????return?getOverall(arr,"getBalance()");????}????static?double?getOverallFixed(Details[]?arr)?{????????return?getOverall(arr,"getFixed()");????}????..????
|