1 创建匿名对象
Object myobj = new Object() {

  public final boolean success = true;

}

2 字面量方式初始化map

Map<String, String> myMap = new HashMap<>() {{

        put("a", "b");

        put("c", "d");

    }};

}
3 初始化数组

var refEntityIDs = new ArrayList<String>(Arrays.asList(
    　　　　 BalanceConst.BEIDVoucherOptFail,
            BalanceConst.BEIDAccountingDocument,
            BalanceConst.BEIDAccDocOptPreTbl
));