Class PredicateNotExamples

java.lang.Object
net.jrodolfo.java_evolution.java11.PredicateNotExamples
public class PredicateNotExamples extends Object
Demonstrates Predicate.not(Predicate), introduced in Java 11.

Before Java 11, negating a predicate in a stream often required a lambda such as value -> !value.isBlank(). That prevented using a direct method reference for the positive condition.

Predicate.not(Predicate) solves this by adapting an existing predicate or method reference into its opposite, keeping stream filters easy to scan.

  • Constructor Details

    • PredicateNotExamples

      public PredicateNotExamples()

  • Method Details

    • nonBlankValues

      public List<String> nonBlankValues(List<String> values)
      Removes blank strings with Predicate.not(String::isBlank).
      Parameters:
      values - the values to filter
      Returns:
      only non-blank values