public class Person {
   
  private String name;
  private String gender;
  private String maritalStatus;
 
  public Person(String name,String gender,String maritalStatus){
   this.name = name;
   this.gender = gender;
   this.maritalStatus = maritalStatus;   
  }
 
  public String getName() {
   return name;
  }
  public String getGender() {
   return gender;
  }
  public String getMaritalStatus() {
   return maritalStatus;
  }  
}

import java.util.List;
 
public interface Criteria {
  public List<Person> meetCriteria(List<Person> persons);
}
 

import java.util.ArrayList;
import java.util.List;
 
public class CriteriaMale implements Criteria {
 
  @Override
  public List<Person> meetCriteria(List<Person> persons) {
   List<Person> malePersons = new ArrayList<Person>();
   for (Person person : persons) {
     if(person.getGender().equalsIgnoreCase("MALE")){
      malePersons.add(person);
     }
   }
   return malePersons;
  }
}

import java.util.ArrayList;
import java.util.List;
 
public class CriteriaFemale implements Criteria {
 
  @Override
  public List<Person> meetCriteria(List<Person> persons) {
   List<Person> femalePersons = new ArrayList<Person>();
   for (Person person : persons) {
     if(person.getGender().equalsIgnoreCase("FEMALE")){
      femalePersons.add(person);
     }
   }
   return femalePersons;
  }
}

import java.util.ArrayList;
import java.util.List;
 
public class CriteriaSingle implements Criteria {
 
  @Override
  public List<Person> meetCriteria(List<Person> persons) {
   List<Person> singlePersons = new ArrayList<Person>();
   for (Person person : persons) {
     if(person.getMaritalStatus().equalsIgnoreCase("SINGLE")){
      singlePersons.add(person);
     }
   }
   return singlePersons;
  }
}

import java.util.List;
 
public class AndCriteria implements Criteria {
 
  private Criteria criteria;
  private Criteria otherCriteria;
 
  public AndCriteria(Criteria criteria, Criteria otherCriteria) {
   this.criteria = criteria;
   this.otherCriteria = otherCriteria;
  }
 
  @Override
  public List<Person> meetCriteria(List<Person> persons) {
   List<Person> firstCriteriaPersons = criteria.meetCriteria(persons);  
   return otherCriteria.meetCriteria(firstCriteriaPersons);
  }
}

import java.util.List;
 
public class OrCriteria implements Criteria {
 
  private Criteria criteria;
  private Criteria otherCriteria;
 
  public OrCriteria(Criteria criteria, Criteria otherCriteria) {
   this.criteria = criteria;
   this.otherCriteria = otherCriteria;
  }
 
  @Override
  public List<Person> meetCriteria(List<Person> persons) {
   List<Person> firstCriteriaItems = criteria.meetCriteria(persons);
   List<Person> otherCriteriaItems = otherCriteria.meetCriteria(persons);
 
   for (Person person : otherCriteriaItems) {
     if(!firstCriteriaItems.contains(person)){
      firstCriteriaItems.add(person);
     }
   }
   return firstCriteriaItems;
  }
}

public class CriteriaPatternDemo {
  public static void main(String[] args) {
   List<Person> persons = new ArrayList<Person>();
 
   persons.add(new Person("Robert","Male", "Single"));
   persons.add(new Person("John","Male", "Married"));
   persons.add(new Person("Laura","Female", "Married"));
   persons.add(new Person("Diana","Female", "Single"));
   persons.add(new Person("Mike","Male", "Single"));
   persons.add(new Person("Bobby","Male", "Single"));
 
   Criteria male = new CriteriaMale();
   Criteria female = new CriteriaFemale();
   Criteria single = new CriteriaSingle();
   Criteria singleMale = new AndCriteria(single, male);
   Criteria singleOrFemale = new OrCriteria(single, female);
 
   System.out.println("Males: ");
   printPersons(male.meetCriteria(persons));
 
   System.out.println("\nFemales: ");
   printPersons(female.meetCriteria(persons));
 
   System.out.println("\nSingle Males: ");
   printPersons(singleMale.meetCriteria(persons));
 
   System.out.println("\nSingle Or Females: ");
   printPersons(singleOrFemale.meetCriteria(persons));
  }
 
  public static void printPersons(List<Person> persons){
   for (Person person : persons) {
     System.out.println("Person : [ Name : " + person.getName()
      +", Gender : " + person.getGender()
      +", Marital Status : " + person.getMaritalStatus()
      +" ]");
   }
  }   
}
 

Males: 
Person : [ Name : Robert, Gender : Male, Marital Status : Single ]
Person : [ Name : John, Gender : Male, Marital Status : Married ]
Person : [ Name : Mike, Gender : Male, Marital Status : Single ]
Person : [ Name : Bobby, Gender : Male, Marital Status : Single ]

Females: 
Person : [ Name : Laura, Gender : Female, Marital Status : Married ]
Person : [ Name : Diana, Gender : Female, Marital Status : Single ]

Single Males: 
Person : [ Name : Robert, Gender : Male, Marital Status : Single ]
Person : [ Name : Mike, Gender : Male, Marital Status : Single ]
Person : [ Name : Bobby, Gender : Male, Marital Status : Single ]

Single Or Females: 
Person : [ Name : Robert, Gender : Male, Marital Status : Single ]
Person : [ Name : Diana, Gender : Female, Marital Status : Single ]
Person : [ Name : Mike, Gender : Male, Marital Status : Single ]
Person : [ Name : Bobby, Gender : Male, Marital Status : Single ]
Person : [ Name : Laura, Gender : Female, Marital Status : Married ]