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

How do I find the Java String length?

Community driven content discussing all aspects of software development from DevOps to design patterns. Follow these steps to find the length of a String in Java: Declare a variable of type String ...
TheServerSide

How to code your first Mojo program

Community driven content discussing all aspects of software development from DevOps to design patterns. The Mojo programming language is new. In fact, it’s still under development. At the end of 2023, ...
InfoWorld

String comparisons in Java

Java’s String class encapsulates an array of bytes. A byte can be converted to a char, in which case, String becomes an array of characters used to compose words, sentences, or any other data you want ...
InfoQ

Java Gets a Boost with String Templates: Simplifying Code and Improving Security

A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...
GitHub

java.lang.NoSuchMethodError: 'java.lang.Class sun.misc.Unsafe.defineClass(java.lang.String, byte[], int, int, java.lang.ClassLoader, java.security.ProtectionDomain)'

I got exceptions when I tried run quarkun application under uber-jar mode，but eveything works fine under fast jar mode。 2021-08-31 10:26:06,312 ERROR [io.qua.ver.htt.run.QuarkusErrorHandler] (executor ...
GitHub

java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference

at com.github.mikephil.charting.d.f.a(Unknown Source) at com.github.mikephil.charting.d.f.a(Unknown Source) at com.github.mikephil.charting.d.f.(Unknown Source) at ...