Avoiding Money Calculation Bugs in Java BigDecimal: Pitfalls of equals, compareTo, and Rounding

In backends that handle billing, discounts, and fees, even when using BigDecimal, bugs such as "amounts are the same but do ...
InfoWorld

Use == (or !=) to Compare Java Enums

Most new Java developers quickly learn that they should generally compare Java Strings using String.equals(Object) rather than using ==. This is emphasized and reinforced to new developers repeatedly ...
Ars Technica

Java: ArrayList.contains(Object o) isn't calling the correct equals method

I have a class, say TextHolder, that overrides Object.equals() to return true if both strings in each object are equal - <tt>new TextHolder("Hello World!").equals(new ...
InfoWorld

String comparisons in Java

Java’s String class encapsulates an array of bytes. A byte can be converted to a char, in which case, String becomes an array of characters used to compose words, sentences, or any other data you want ...