Astronomers have discovered a strange new object in our Milky Way. An international team reported Wednesday that this celestial object — perhaps a star, pair of stars or something else entirely — is ...

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 ...

Community driven content discussing all aspects of software development from DevOps to design patterns. The latest long-term support (LTS) release of the JDK is Java 21, which was released in ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

What’s the difference between versions of Minecraft? That’s not as simple a question to answer as you might think. Most current players will be used to whatever version they’ve started on, whether ...

com.alibaba.fastjson2.JSONException: can not cast to java.math.BigDecimal, from class org.bson.types.Decimal128 at com.alibaba.fastjson2.util.TypeUtils.cast(TypeUtils ...

OS信息： [e.g.：CentOS 8.4.2105 4Core 3.10GHz 16 GB] JDK信息： [e.g.：Openjdk 1.8.0_312] 版本信息：[e.g.：Fastjson2 2.x.x] Exception in thread "main ...

The technology is legendary, but how and why Sun Microsystems eventually settled on the name 'Java' was always something of a mystery—even to those involved. When Time magazine called Java one of the ...

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 ...

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 ...