From 159854552f62b87ba25557de5bfc34480b87a1d5 Mon Sep 17 00:00:00 2001
From: terry <724796052@qq.com>
Date: Fri, 1 Jul 2022 18:19:17 +0800
Subject: [PATCH] flyWeight pattern

---
 src/main/java/flyWeight/StringTest.java | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 src/main/java/flyWeight/StringTest.java

diff --git a/src/main/java/flyWeight/StringTest.java b/src/main/java/flyWeight/StringTest.java
new file mode 100644
index 0000000..59c91ac
--- /dev/null
+++ b/src/main/java/flyWeight/StringTest.java
@@ -0,0 +1,15 @@
+package flyWeight;
+
+public class StringTest {
+    public static void main(String[] args) {
+        String s1 = "abc";
+        String s2 = "abc";
+        String s3 = new String("abc");
+        String s4 = new String("abc");
+        System.out.println(s1 == s2); // true
+        System.out.println(s1 == s3); // false
+        System.out.println(s3 == s4); // false
+        System.out.println(s3.intern() == s4.intern()); // true intern()从常量池找
+        System.out.println(s3.intern() == s1); // true
+    }
+}