package ch.claude_martin;

import java.util.ArrayList;

public class SomeClass {
  String someField;

  SomeClass(String value) {
    this.someField = value;
  }

  public static void main(String[] args) {
    ArrayList<SomeClass> list = new ArrayList<>();
    list.add(new SomeClass("Bob"));
    list.add(new SomeClass("Jane"));
    list.add(new SomeClass("Sepp"));
    list.add(new SomeClass("Renée"));

    System.out.println(list.contains(new SomeClass("Bob"))); // false
    System.out.println(list.stream().anyMatch(o -> "Bob".equals(o.someField))); // true

  }
}