technology

Java Constructor

Unsure about default constructors? Spot the difference: one initializes, the other... doesn't. Can you identify the subtle, yet crucial, distinction?

#java

 admin  Mar 10, 2025

technology

Web Page Caching: Cross-Browser Control

HTTP cache busting? Tried all the standard headers, but some browsers are ignoring them. Need a rock-solid, cross-browser solution (IE6+!) for *never* caching sensitive pages. Challenge accepted?

#java

 admin  Mar 05, 2025

technology

Java Random Alphanumeric String

Generate a truly random 17-character alphanumeric ID. My current approach feels clunky. Is there a more elegant, performant solution? Challenge accepted?

#java

 admin  Mar 05, 2025

technology

Java Object Size

Avoid `OutOfMemoryError`! Process gigabytes of CSV data efficiently. Learn how to programmatically determine Java object size and memory usage limits for robust data handling.

#java

 admin  Mar 04, 2025

technology

Java toString() Performance: StringBuilder vs. String Concatenation

String concatenation showdown! `+` vs. `StringBuilder`. Is there a performance tipping point? Find out which `toString()` implementation reigns supreme.

#java

 admin  Mar 04, 2025

technology

Reflection: What's the Point?

Unlock the power of runtime code manipulation. Learn about reflection in Java (and beyond!) – discover how to inspect and modify your own program's structure at runtime. Intrigued?

#java

 admin  Mar 04, 2025

technology

Java's `for-each` Loop: Under the Hood

Revisit Java's `for` loop: Ditch the enhanced `for-each` and unlock the power of direct list manipulation. Can you handle the iteration without it?

#java

 admin  Mar 04, 2025