Immutable, the Builder Pattern vs Messy POJOs (or POCOs)

Learn how these design patterns made famous by the GoF (Gang of Four) can help you achieve more reliable and cleaner code.

One of the 3 line of codes has a _bad bad_ bug. Can you tell?

1. new Phrase(“how are you?”, “en-US”);
2. new Phrase()
    .setText(“how are you?”)
    .setLocale(“en-US”);