Java Stream How to - Check if none string in the list matches the condition

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Question

We would like to know how to check if none string in the list matches the condition.

Answer

import java.util.ArrayList;
import java.util.List;
/*  ww  w  .java 2 s.  co m*/
public class Main {

  public static void main(final String[] args) {
    List<String> stringCollection = new ArrayList<>();
    stringCollection.add("ddd2");
    stringCollection.add("aaa2");
    stringCollection.add("bbb1");
    stringCollection.add("aaa1");
    stringCollection.add("bbb3");
    stringCollection.add("ccc");
    stringCollection.add("bbb2");
    stringCollection.add("ddd1");

    boolean noneStartsWithZ = stringCollection
            .stream()
            .noneMatch((s) -> s.startsWith("z"));

    System.out.println(noneStartsWithZ);      // true
  }

}

The code above generates the following result.

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