Community driven content discussing all aspects of software development from DevOps to design patterns. The Java ternary operator provides an abbreviated syntax to evaluate a true or false condition, ...

Hi, I'm trying the integrated-windows-authentication sample with my [email protected] account. I got the following error: (it is because the WSTrustRequest returned 401) ...

Abstract: In this experience paper, we share our experience on enhancing automatic unit test generation to more effectively find Java null pointer exceptions (NPEs). NPEs are among the most common and ...

For Java-based programs such as Maven, Jenkins, Gradle or Tomcat to run, they need to know that Java's JDK is installed. That's the purpose of the JAVA_HOME environment variable. It tells programs ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Vivek Yadav, an engineering manager from ...

在 Java 中，Map 是属于 java.util 包下的一个接口（interface），所以说“为什么 Map 不能插入 null？”这个问题本身问的不严谨。Map 部分类关系图如下： 从上述结果可以看出，HashMap 是允许 key 和 value 值都为 null 的。 但 ConcurrentHashMap 就不同了，它不但 key 不能为 null ...

在Java开发中，我们经常会遇到需要对对象的属性进行处理的情况。有时候，我们需要将所有字段为null的属性赋值为空字符串。本篇博客将介绍如何使用Java代码进行这一操作。 背景 在实际开发中，我们常常会从数据库或其他数据源查询到对象，并对其进行处理 ...

at java.desktop/sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:224) at java.desktop/sun.awt.FontConfiguration.init(FontConfiguration.java:106) at ...

Null pointer exceptions are no fun. You can avoid them and keep your code clean and maintainable by using these techniques to elegantly handle null values in C#. When working on applications in any ...

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 ...

Kotlin offers big advantages over Java for JVM and Android development, and plays nicely with Java in the same projects. Kotlin is a general purpose, free, open source, statically typed “pragmatic” ...