Java 8 in Action

https://www.cnblogs.com/HelloDeveloper/p/11404523.html

 

/ ** 
* @param args 
* / 
public static void main (String [] args) { 
    List <Integer> = numberList Arrays.asList (. 1, 2,. 3); 
    System.out.println ( "original set:" + numberList ); 

    List <Integer> = numbers filter (numberList, (Integer I) -> I% 2 == 0); 
    System.out.println ( "number divisible by 2:" + numbers); 
} 


/ ** 
* screening green apple 
* / 
public static <T> List <T> filter (List <T> List, the Predicate <T> the predicateA) { 
    List <T> resultList = new new the ArrayList <> (); 
    for (T T: List) { 
        // object encapsulates predicate condition 
        IF (predicate.filter (T)) { 
            resultList.add (T); 
        } 
    } 
    return resultList;
}

/**
 * @param <T>
 */
public interface Predicate<T> {
    boolean filter(T t);
}

 

Thread t1 = new Thread(() -> System.out.println("Hello Lambda!"));

t1.start();