To maximize code re-use, the GWT compiler also ignores unrecognized annotations, such as those required by JPA, that typically appear on types shared between the client and server.

• 最大限度的利用代码，GWT编辑器也可以忽略无法识别的说明，如梭需要的JPA，通常出现在类型共享在客户端和服务端之间。