Introduced with the Java 17 release, pattern matching enhances the instanceof operator so Java developers can better check and object's type and extract its components, and more efficiently deal with ...

The error 500: Java.lang.nullpointerexception is an error that is faced by some developers when executing their code. Moreover, end-users also encounter the error 500 ...

我们今天就要尽可能的利用Java8的新特性 Optional来尽量简化代码同时高效处理NPE（Null Pointer Exception 空指针异常）。 相信不少小伙伴已经被java的NPE(Null Pointer Exception)所谓的空指针异常搞的头昏脑涨,有大佬说过“防止 NPE，是程序员的基本修养。”但是修养归修养 ...

Runtime errors occur when something goes wrong in the normal execution of a program. When severe enough, these errors abruptly terminate an application. To help programmers both anticipate and recover ...

Then there’s the NullPointerException. Null pointer exception is an “exception” (error) that is particularly common when programming in Java. For a beginner, this is a confusing and daunting ...

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

See also: NullPointerException in Java – Explaining the Billion Dollar Mistake A good example would be the FileNotFoundException. This does exactly what it says on the tin: this exception is ...

今天就要尽可能的利用Java8的新特性 Optional来尽量简化代码同时高效处理NPE（Null Pointer Exception 空指针异常） 首先我们先打开Optional的内部,去一探究竟 先把几个创建Optional对象的方法提取出来 我们关于创建Optional对象的内部方法大致分析完毕 接下来也正式的进入 ...

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

这个demo来说明怎么排查一个@Transactional引起的NullPointerException。 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62 ...