package FDynamic.Stream;

import java.math.BigDecimal;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.Map;

import java.util.stream.Collectors;

public class CollectorsDemo {

public static void main(String[] args) {

List<Person> personList= Arrays.asList(

new Person("aaa", 18, new BigDecimal(123)),

new Person("aaa", 18, new BigDecimal(123)),

new Person("bbb", 19, new BigDecimal(124))

);

groupBy(personList);

partionBy(personList);

}

/**

* 根据人员的name来进行分组

* @param personList

*/

public static void groupBy(List<Person> personList){

Map<String, List<Person>> map=personList.stream()

.collect(Collectors.groupingBy(Person::getName));

System.out.println(map);

}

/**

* 根据人员的name是否是aaa来进行区分

* @param personList

*/

public static void partionBy(List<Person> personList){

Map<Boolean, List<Person>> map=personList.stream()

.collect(Collectors.partitioningBy(person -> "aaa".equals(person.getName())));

System.out.println(map);

}

}