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The All-in-One Guide to Java Programming

Java 8 Cheat Sheet

Explore essential Java 8 concepts such as lambda expressions, method references, and functional interfaces including Function, Supplier, Predicate, Consumer, and BiFunction. Learn how these features improve code clarity and functional programming in Java to enhance your development skills.

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Lambda syntax

Java
 str -> System.out.println(str)
 () -> System.out.println(this)
 (String str) -> System.out.println(str)
 (String s1, String s2) -> { return s2.length() - s1.length(); }
 (s1, s2) -> s2.length() - s1.length()
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Java
Function f = Object::toString
Supplier s = thing::toString
Stream<File> pdfs = getFiles().filter(FileFilters::fileIsPdf)

Functional interfaces under java.util.function

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