# 組件源碼 ``` /** * <b>方法描述：</b> 差集 <br/> * <b>創建者：</b> admin <br/> * <b>創建時間：</b> 2018-05-11 11:52:36 <br/> * * @param c1 * 入參|集合1|{@link java.util.Collection} * @param c2 * 入參|集合2|{@link java.util.Collection} * @param c * 出參|差集|{@link java.util.Set} * @return 0 失敗<br/> * 1 成功<br/> */ @Component(label = "差集", style = "判斷型", type = "同步組件", comment = "取兩個集合的交差集", version = "1.0.0", deprecated = false, author = "admin", date = "2018-05-11 11:52:36") @InParams(param = { @Param(name = "c1", comment = "集合1", type = java.util.Collection.class), @Param(name = "c2", comment = "集合2", type = java.util.Collection.class) }) @OutParams(param = { @Param(name = "c", comment = "差集", type = java.util.Set.class) }) @Returns(returns = { @Return(id = "0", desp = "失敗"), @Return(id = "1", desp = "成功") }) public static ResultBase P_difference(Collection c1, Collection c2) { if (c1 == null && c2 == null) return ResultBase.newFailureResult("TPTC1009", "兩個集合為空集合(Null)"); if (c1 == null && c2 != null) return ResultBase.newSuccessResult(c2); if (c1 != null && c2 == null) return ResultBase.newSuccessResult(c1); List list1 = new ArrayList<Object>(c1); List list2 = new ArrayList<Object>(c2); list1.removeAll(list2); return ResultBase.newSuccessResult(list1); } ``` # 交易中組件使用方式  # 參數說明及示例 ## 入口參數 集合1：傳入一個集合，示例： `[1,2,3]` 集合2：傳入一個集合，示例： `[2，3，4]` ## 出口參數 差集：取第一個集合獨有的元素，示例： `__INNER__["list"]` > 注意：IDE 中集合和數組都以 [] 表示。