Java Interface Explained

So what is a Java interface? It’s actually a really good question because I have found many Java programmers that have never used an interface in their Java programming activities. I suspect this is the case because maybe they

Java 9 Java Shell Jshell

So what is Java Shell? It’s a new utility that was introduced in Java 9. Java Shell or JShell was helps developers run short programs very quickly without needing to create classes or methods. You simply declare variables, write

Java HashMap Copy Sample

Java HashMap copy operation to copy an existing HashMap to a new HashMap can be done in a few different ways. The first option is to construct a new HashMap and pass the exiting HashMap as the constructor argument.

Java HashMap Remove Example

The HashMap.remove() method allows you to remove the mapping for the specified key from this map if present. The remove() method takes a single argument, which is the key. The key is exactly that within the HashMap. In our