//測試類

package test;

import java.util.ArrayList;
import java.util.List;

import org.junit.jupiter.api.Test;

public class TestLambda {
	@Test
	public void test() {
		List<Person>list=new ArrayList<Person>();
		list.add(new Person("張三",20,500));
		list.add(new Person("李四",40,600));
		list.add(new Person("趙四",35,500));
		list.add(new Person("王五",36,500));
		list.add(new Person("王七",30,600));
		list.add(new Person("旺旺",31,700));
		list.add(new Person("倪萍",35,500));
		List<Person>personList=getPersonList(list,new GetInfoByAge());
		System.out.println(list.toString());
		System.out.println("personList=========="+personList);
		personList.forEach(person->System.out.println("結果==="+person));
		
	}
	public List<Person>getPersonList(List<Person>list,GetInfoByAge info){
		List<Person>personList=new ArrayList<Person>();
		for(Person person:list) {
			if(info.getInfo(person)){
				personList.add(person);
			}
		}
		return personList;
	}

}

　　介面

package test;

public interface MyPrivate<T> {
	public boolean getInfo(T t);

}

　　實現類

package test;

public class GetInfoByAge implements MyPrivate<Person>{

	@Override
	public boolean getInfo(Person p) {
		
		return p.getAge()>=35;
	}

}