From e2bdee630dedb780461a9d2b289f1be5355f4c77 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Sat, 8 Aug 2026 14:14:34 +0800
Subject: [PATCH] =?UTF-8?q?s-day07-=20=E5=B8=B8=E7=94=A8=E7=9A=84=E5=87=BD?=
 =?UTF-8?q?=E6=95=B0=E5=BC=8F=E6=8E=A5=E5=8F=A3=5FPredicate?=
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---
 .../inmind/funcitonal_predicate05/Demo09.java | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 s-day07/src/com/inmind/funcitonal_predicate05/Demo09.java

diff --git a/s-day07/src/com/inmind/funcitonal_predicate05/Demo09.java b/s-day07/src/com/inmind/funcitonal_predicate05/Demo09.java
new file mode 100644
index 0000000..4fe3d3c
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+++ b/s-day07/src/com/inmind/funcitonal_predicate05/Demo09.java
@@ -0,0 +1,34 @@
+package com.inmind.funcitonal_predicate05;
+
+import java.util.function.Predicate;
+
+/*
+JDK为了避免各个程序员定义一些重复的无效的函数式接口，所以，它就提供了一些常用的函数式接口
+常用的函数式接口_Predicate
+Interface Predicate<T>
+
+boolean test(T t) 用来判断或者筛选数据
+
+Predicate函数式接口,用来进行数据筛选,用来判断指定的数据是否符合业务
+
+什么时候要使用Predicate??
+当我们开发人员想自定义一个函数式接口,并且该接口中要定义一个接收一个参数,并返回boolean型返回值的抽象方法时，直接使用Predicate
+
+
+使用Predicate接口判断指定的字符串长度是否>3(包含java)
+ */
+public class Demo09 {
+    public static void main(String[] args) {
+        //字符串长度是否>3
+//        method(s->{return s.length()>3;},"woaijava");
+        method(s-> s.length()>10,"woaijava");
+
+        //字符串是否包含java   1个参数，有返回值
+        method(s-> s.contains("java"),"woaijava");
+    }
+
+    public static void method(Predicate<String> predicate, String s) {
+        boolean result = predicate.test(s);
+        System.out.println("判断的结果为："+result);
+    }
+}