note

【日記】JavaのSimpleDateFormatのマルチスレッド問題

Java開発者としてはSimpleDateFormatがスレッドセーフではないことは常識だと思っているのですが、仕事で保守しているシステムでこのオブジェクトをstaticで保持して、マルチスレッドでアクセスするという実装があることが最近発覚して対応に追われました。
GitHub

SimpleDateFormat usage in JAX-RS Headers class causing ArrayIndexOutOfBoundsException #5439

An internal customer ran into an ArrayIndexOutOfBoundsException that appears to be the result of multiple threads using the same SimpleDateFormat instance. According to the JavaDocs, SimpleDateFormat ...
GitHub

SimpleDateFormat doesn't support timezone parsing with the character X in the pattern ...

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LinkedIn

How to Format Dates with SimpleDateFormat in Java

🚀 Java Date Formatting: Controlling Output with SimpleDateFormat ️ After covering the basic Date class, today I focused on formatting dates. The raw output of a Date object isn't always user-friendly ...
InfoWorld

JavaFX-Based SimpleDateFormat Demonstrator

One of the things that can be a little tricky for developers new to Java or even for experienced Java developers new to formatting with Java Date s, is the specification of a date/time format using ...
LinkedIn

Java SimpleDateFormat Thread Safety Issue

Your date parsing works perfectly in testing. Then multiple threads hit it together… 💀 Java Fundamentals A-Z | Post 29 Can you spot the problem? 👇 private static final SimpleDateFormat sdf = new ...