Java Stream: Sort by Multiple Fields With thenComparing()
Sort by multiple fields in a Java stream with comparing() and thenComparing(), mix ascending and descending order, handle nulls and pick keys at runtime.
Java Comparator Interface: comparing(), thenComparing(), nulls
Java Comparator interface with lambdas, comparing(), thenComparing(), reversed() and nullsFirst(), plus sorting by multiple fields in Java 25.
Java Comparable Interface: compareTo() and Natural Ordering
Learn the Java Comparable interface with compareTo() examples, the contract rules, the subtraction and equals() traps, and natural order in records.
Compare Float and Double in Java: Epsilon, compare(), BigDecimal
Learn to compare float and double in Java with a relative tolerance, Double.compare(), NaN and -0.0 rules, float vs double precision and BigDecimal.