From 25c32a71e76b10b78e672ab8f0d390b193f6a7b9 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Sat, 14 Mar 2026 11:04:24 +0800
Subject: [PATCH] =?UTF-8?q?=E8=BF=9B=E9=98=B6day06-Predicate=E7=9A=84and?=
 =?UTF-8?q?=E6=96=B9=E6=B3=95?=
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---
 .../inmind/functional_interface02/Demo09.java | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 javaSE-day07/src/com/inmind/functional_interface02/Demo09.java

diff --git a/javaSE-day07/src/com/inmind/functional_interface02/Demo09.java b/javaSE-day07/src/com/inmind/functional_interface02/Demo09.java
new file mode 100644
index 0000000..29f3b29
--- /dev/null
+++ b/javaSE-day07/src/com/inmind/functional_interface02/Demo09.java
@@ -0,0 +1,40 @@
+package com.inmind.functional_interface02;
+
+import java.util.function.Predicate;
+
+/*
+Predicate的and方法
+
+default Predicate<T> and(Predicate<? super T> other)
+返回一个组合的谓词，表示该谓词与另一个谓词的短路逻辑AND  &&。
+
+需求：对一个字符串，使用2个predicate，判断它是否以h开头，它的长度是否大于3
+
+boolean test(T)
+ */
+public class Demo09 {
+    public static void main(String[] args) {
+        /*method((String s)->{return s.startsWith("h");},
+                (String s)->{return s.length() >3;},
+                "helloworld");*/
+
+        method( s-> s.startsWith("h"),
+                (String s)->{return s.length() >3;},
+                "helloworld");
+
+    }
+
+    //定义一个方法，接收2个判断条件predicate，1个要判断的字符串，没有返回值
+    public static void method(Predicate<String> predicate1, Predicate<String> predicate2, String str) {
+        /*boolean result1 = predicate1.test(str);
+        boolean result2 = predicate2.test(str);
+        boolean result = result1&&result2;*/
+
+//        boolean result = predicate1.test(str)&&predicate2.test(str);
+        Predicate<String> newPredicate = predicate1.and(predicate2);
+        boolean result = newPredicate.test(str);
+
+        System.out.println("最终结果："+result);
+    }
+
+}