I Put That On Everything

Java Swing developers really said "You know what? Let's just put a 'J' in front of literally every component name and call it a day." JButton, JLabel, JPanel, JFrame, JTextField... it's like they discovered the letter J and couldn't stop themselves. It's the programming equivalent of that hot sauce brand where people genuinely do put it on everything, except instead of enhancing flavor, you're just making desktop GUIs that look like they time-traveled from 1997. The naming convention is so aggressively consistent that you could probably guess what a JToaster or JCoffeeMaker would do. Props for consistency though—at least you always know you're in Swing territory when you see that J prefix everywhere.