TheServerSide

How to format a Java String with printf example

Community driven content discussing all aspects of software development from DevOps to design patterns. The Java String printf method can be confusing at first, but it greatly simplifies how you ...
InfoWorld

What you need to know about Java wrapper classes

Have you ever wondered how Java seamlessly combines its primitive data types with object-oriented programming? Enter wrapper classes, an important but often overlooked Java feature. These special ...
TheServerSide

String to long in Java

Community driven content discussing all aspects of software development from DevOps to design patterns. The correct way to convert a String to long in Java is to use the parseLong(String x) method of ...
GitHub

using jersey-container-servlet with Tomcat 10.1 leads to NoSuchMethodError: 'void jakarta.servlet.http.HttpServletResponse.setStatus(int, java.lang.String)'

As reported on oracle/opengrok#4070, running the OpenGrok webapp (that uses Jersey to implement RESTful APIs) with Tomcat 10.1 leads to: org.glassfish.jersey.server.ContainerException: ...
GitHub

Bug: JNI DETECTED ERROR IN APPLICATION: JNI NewStringUTF called with pending exception java.lang.NumberFormatException: Invalid int:

When running code on Android, I hit JNI error mentioned in the subject, which also dumps the stack of the unhandled exception: A/art: art/runtime/java_vm_ext.cc:410 ...
InfoWorld

Named Parameters for PreparedStatement

The problems with PreparedStatement stem from its syntax for parameters. Parameters are anonymous and accessed by index as in the following: PreparedStatement p = con.prepareStatement("select * from ...