Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

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 ...

Method references are a shorthand way to write lambda expressions that call a single method. Rather than implementing a method in a functional interface, a method reference simply points to an ...

Community driven content discussing all aspects of software development from DevOps to design patterns. The latest long-term support (LTS) release of the JDK is Java 21, which was released in ...

In January, 1923, Lee Strasberg went to Al Jolson’s 59th Street Theatre to see “Tsar Fyodor Ivanovich,” a nineteenth-century Russian play about sixteenth-century Russian politics, performed, in ...

Wim Hof is an athlete and motivational speaker who has proposed that cold exposure combined with periods of hyperventilation and breath-holding can improve health and well-being. The method involves ...

On her third album, the UK singer-songwriter sounds relaxed, confident, unflappably cool, even in moments of conflict. The result is an album of everyday luxury, lush and unhurried. She’s not without ...

Reflection was essential to the advanced Java toolkit for years. Now it's being superseded by newer, safer options. Here's how to use MethodHandle and VarHandle to gain programmatic access to methods ...

See how the critical path method (CPM) can be used for project management in our detailed guide. We’ll walk you through how to calculate it and share real-world examples for applying CPM to different ...