Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.

Add additional flags to the conversion specifiers to format for width, padding and annotations Pass the String to the Java printf method and supply corresponding arguments for each conversion ...

Or to put it more simply, argument should start with either in_, out_ or io_. Generally speaking, variables are not visible outside the activity in which they are defined. To overcome this limitation ...