diff --git a/s-day07/src/com/inmind/funcitonal_predicate05/Demo10.java b/s-day07/src/com/inmind/funcitonal_predicate05/Demo10.java
new file mode 100644
index 0000000..86bf2da
--- /dev/null
+++ b/s-day07/src/com/inmind/funcitonal_predicate05/Demo10.java
@@ -0,0 +1,44 @@
+package com.inmind.funcitonal_predicate05;
+
+import java.util.function.Predicate;
+
+/*
+    2.Predicate里面的and方法
+
+    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
+    分析：
+        1.一个predicate要对字符串进行判断是否以h开头
+        2.另一个predicate要对字符串进行判断它的长度是否大于3
+ */
+public class Demo10 {
+    public static void main(String[] args) {
+        method1(
+                s->s.startsWith("h"),
+                s->s.length()>3,
+                "hello java"
+        );
+    }
+
+    public static void method1(Predicate<String> predicate1, Predicate<String> predicate2, String s) {
+        /*boolean result1 = predicate1.test(s);
+        boolean result2 = predicate2.test(s);
+        boolean result = result1 && result2;*/
+
+        boolean result = predicate1.and(predicate2).test(s);
+        System.out.println(result);
+    }
+
+    //需求：对一个字符串，使用2个predicate，判断它是否以h开头或者它的长度是否大于3
+    public static void method2(Predicate<String> predicate1, Predicate<String> predicate2, String s) {
+        /*boolean result1 = predicate1.test(s);
+        boolean result2 = predicate2.test(s);
+        boolean result = result1 || result2;*/
+
+        boolean result = predicate1.or(predicate2).test(s);
+        System.out.println(result);
+//        boolean value = predicate1.negate().test(s);
+    }
+
+
+
+}