in particular, we ll look into bug patterns that crop up as null pointer exceptions and discuss how to minimize their occurrence 我们将特别看一下作为空指针异常而出现的错误模式,并讨论如何将它们的出现次数控制到最少。
a null pointer exception is returned in the application server file systemout . log when ifxbblob or ifxcblob is created using a serialized object and sent to the server 当使用串行化的对象创建ifxbblob或ifxcblob并将它们发送到服务器时,会返回一个空指针异常。
a null pointer exception is a fairly common run time error, which can stem from variables such as arrays not being initialized, or other cases where a program is attempting to use a null in the place of an object nullpointerexception是一种很常见的运行时错误,这种错误来源于变量(例如数组)没有进行初始化,或者是某个应用程序企图在对象位置使用空指针的情况。