.....
    public static void main(String[] args){

        List<Person> roster = new ArrayList<Person>();

        printPersons(roster, new CheckPersonEligibleForSelectiveService());

        printPersons(
                roster,
                new CheckPerson() {
                    public boolean test(Person p) {
                        return p.getGender() == Person.Sex.MALE
                                && p.getAge() >= 18
                                && p.getAge() <= 25;
                    }
                }
        );

        printPersons(
                roster,
                new CheckPerson() {
                    public boolean test(Person p) {
                        return p.getAge() >= 0 && p.getAge() <= 99;
                    }
                }
        );

        printPersons(
                roster,
                (Person p) ->
                        p.getGender() == Person.Sex.MALE
                        && p.getAge() >= 18
                        && p.getAge() <= 25
        );

          printPersons(
                roster,
                (Person p) -> p.getGender() == Person.Sex.FEMALE
        );
    }

  public static void main(java.lang.String[]);
    Code:
       0: new           #9                  // class java/util/ArrayList
       3: dup           
       4: invokespecial #10                 // Method java/util/ArrayList."<init>":()V
       7: astore_1      
       8: aload_1       
       9: new           #11                 // class CheckPersonEligibleForSelectiveService
      12: dup           
      13: invokespecial #12                 // Method CheckPersonEligibleForSelectiveService."<init>":()V
      16: invokestatic  #13                 // Method printPersons:(Ljava/util/List;LCheckPerson;)V
      19: aload_1       
      20: new           #14                 // class Main$1
      23: dup           
      24: invokespecial #15                 // Method Main$1."<init>":()V
      27: invokestatic  #13                 // Method printPersons:(Ljava/util/List;LCheckPerson;)V
      30: aload_1       
      31: new           #16                 // class Main$2
      34: dup           
      35: invokespecial #17                 // Method Main$2."<init>":()V
      38: invokestatic  #13                 // Method printPersons:(Ljava/util/List;LCheckPerson;)V
      41: aload_1       
        42: invokedynamic #18,  0             // InvokeDynamic #0:test:()LCheckPerson;
      47: invokestatic  #13                 // Method printPersons:(Ljava/util/List;LCheckPerson;)V
      50: aload_1       
        51: invokedynamic #19,  0             // InvokeDynamic #1:test:()LCheckPerson;
      56: invokestatic  #13                 // Method printPersons:(Ljava/util/List;LCheckPerson;)V
      59: return        

  private static boolean lambda$main$1(Person);
    Code:
       0: aload_0       
       1: invokevirtual #20                 // Method Person.getGender:()LPerson$Sex;
       4: getstatic     #21                 // Field Person$Sex.FEMALE:LPerson$Sex;
       7: if_acmpne     14
      10: iconst_1      
      11: goto          15
      14: iconst_0      
      15: ireturn       

  private static boolean lambda$main$0(Person);
    Code:
       0: aload_0       
       1: invokevirtual #20                 // Method Person.getGender:()LPerson$Sex;
       4: getstatic     #22                 // Field Person$Sex.MALE:LPerson$Sex;
       7: if_acmpne     32
      10: aload_0       
      11: invokevirtual #8                  // Method Person.getAge:()I
      14: bipush        18
      16: if_icmplt     32
      19: aload_0       
      20: invokevirtual #8                  // Method Person.getAge:()I
      23: bipush        25
      25: if_icmpgt     32
      28: iconst_1      
      29: goto          33
      32: iconst_0      
      33: ireturn       
}