The role of the JVM interpreter is to compile Java code to intermediate bytecode, which is then executed by an interpreter. We can also use a JIT compiler. A quick review of the compiler, interpreter and the JVM.
Java strings are internally represented in either ASCII or UTF-16. So a Java programmer should know something about ASCII, Unicode and UTF. We look at ASCII, Unicode, UTF-8, UTF-16 and UTF-32
Compact strings in Java are an enhancement introduced in Java 9. Strings use a lot of heap memory. Reducing the internal size of a string can save memory and garbage collection overhead. Let’s have a look at how compact strings work in Java.
Choosing a collection in Java is important. You want to know how to choose the right concrete collection class to use for your Java collection. In this article we look at choosing the interface, choosing the implementation, and comparing the various concrete classes in the Collections framework.
Big O notation is a tool we use to analyse the cost of an algorithm. It is a useful concept when we want to choose which collection class to use for a particular use case
In this article I look at the options for Java developers when it comes to cross-platform mobile app development. The options are varied, but not great if you stick with Java.
The standard way of packaging a Java application is to create a JAR or WAR file that contains the components we need. I take a quick look at the types of JAR and WAR files. We need to choose correctly if we want to use microservices.
This week we look at Java user interface options for application development. Specifically we compare the rich client graphical user interface options and the web-based user interface.
There are plenty of adverts for full-stack developers. But what exactly are the requirements for a (Java) full-stack developer? Lewis looks at all the possible skills required. And then asks: is this a real thing, or a way to justify expecting fewer developers to do more work?
String interning in Java is a way to store only a single copy of each different string value. String interning can make string processing faster. But it also has potential problems, including security issues.
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