Codetown ::: a software developer's community
Hello all, I am “very” new to Java and fairly new to programming in general. I have been reading the “Head First Java” book and while doing one of the examples came across an observation. I created a colored circle and a button when you click the button the circle changes to a random color with the repaint() method. I have dual monitors set up and what I noticed was that If I were to drag the window to the second monitor it fires the repaint() method. Can anyone explain why this happens? I know this is probably something as a new programmer I don’t need to know right now but it did intrigue me so I thought I would ask.
Tags:
Codetown is a social network. It's got blogs, forums, groups, personal pages and more! You might think of Codetown as a funky camper van with lots of compartments for your stuff and a great multimedia system, too! Best of all, Codetown has room for all of your friends.
Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.
Check out the Codetown Jobs group.

Morgan Stanley engineers Jim Gough and Andreea Niculcea showed how they're retooling the bank's API program for AI agents using MCP and FINOS CALM. Live demos covered compliance guardrails, deployment gates, and zero-downtime rollouts across 100+ APIs. First API deployment shrank from two years to two weeks. They also demoed Google's A2A protocol running alongside MCP.
By Steef-Jan WiggersChristine Lemmer-Webber, Executive Director at the Spritely Institute, and David Thompson, CTO at the Spritely Institute, presented “Spritely: Infrastructure for the Future of the Internet” at QCon London 2026, where they discussed how Spritely works to decentralize the Internet with new foundational technologies that put users in control.
By Michael Redlich
You can find your way through an organization by figuring out what artifacts people leave behind, David Grizzanti mentioned at InfoQ Dev Summit Boston. He compared culture to anthropology, suggested studying behaviors, power dynamics, and decisions first, and then patiently model and reward new norms, build allies, and use influence and leading by example, to shift engineering culture over time.
By Ben Linders
At QCon London 2026, Jeff Smith discussed the growing mismatch between AI coding models and real-world software development. While AI tools are enabling developers to generate code faster than ever, Smith argued that the models themselves are increasingly “stale” because they lack the repository-specific knowledge required to produce production-ready contributions.
By Daniel Dominguez
Claude Opus 4.6 discovered 22 Firefox vulnerabilities in two weeks, including 14 high-severity bugs, as nearly 20% of all critical Firefox vulnerabilities were fixed in 2025. The AI also wrote working exploits for two bugs, demonstrating emerging capabilities that give defenders a temporary advantage but signal an accelerating arms race in cybersecurity.
By Steef-Jan Wiggers
© 2026 Created by Michael Levin.
Powered by