Predicate_demo
参考：(15条消息) Java 8 Predicate类基本使用详解_codesWang的博客-CSDN博客
1 package com.hmb; 2 3 import java.util.Arrays; 4 import java.util.List; 5 import java.util.function.Predicate; 6 7 public class Main { 8 public static void main(String[] args) { 9 List<String> strs = Arrays.asList("lkjlk", "gjgkj", "liuhliu", "ligui", "hmb"); 10 Predicate<String> lenCheck = s -> s.length() > 4; 11 Predicate<String> startWith = s -> s.startsWith("l"); 12 Predicate<String> equalhmb = Predicate.isEqual("hmb"); 13 14 strs.stream().filter(lenCheck).forEach(s -> System.out.print(s + " ")); 15 System.out.println(); 16 strs.stream().filter(startWith).forEach(s -> System.out.print(s + " ")); 17 System.out.println(); 18 strs.stream().filter(equalhmb).forEach(s -> System.out.print(s + " ")); 19 System.out.println(); 20 strs.stream().filter(lenCheck.and(startWith)).forEach(s -> System.out.print(s + " ")); 21 System.out.println(); 22 strs.stream().filter(lenCheck.or(startWith)).forEach(s -> System.out.print(s + " ")); 23 System.out.println(); 24 strs.stream().filter(lenCheck.negate()).forEach(s -> System.out.print(s + " ")); 25 } 26 }
