stringBuilder3__append

Author: CPU-Code

README.md

@@ -2,7 +2,7 @@
  * @由于个人水平有限, 难免有些错误, 还请指点:  
  * @Author: cpu_code
  * @Date: 2020-07-12 12:03:11
- * @LastEditTime: 2020-09-16 13:06:48
+ * @LastEditTime: 2020-09-16 13:16:12
  * @FilePath: \java\README.md
  * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
  * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
@@ -236,6 +236,8 @@ java编程基础 面向对象 javaAPI 集合 IO GUI JD8C 多线程 网络编程
 
 - [x] [stringBuilder1__字符串拼接](javaAPI/stringBuilder/stringBuilder1.java)
 - [x] [stringBuilder2__构造方法](javaAPI/stringBuilder/stringBuilder2.java)
+- [x] [stringBuilder3__append](javaAPI/stringBuilder/stringBuilder3.java)
+
 
 ### [包装类](javaAPI/stringBuilder)
 

javaAPI/stringBuilder/stringBuilder3.java

@@ -0,0 +1,39 @@
+/*
+ * @由于个人水平有限, 难免有些错误, 还请指点:  
+ * @Author: cpu_code
+ * @Date: 2020-09-16 13:15:39
+ * @LastEditTime: 2020-09-16 13:16:04
+ * @FilePath: \java\javaAPI\stringBuilder\stringBuilder3.java
+ * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
+ * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
+ * @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
+ * @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
+ */
+package javaAPI.stringBuilder;
+
+public class stringBuilder3 {
+    public static void main(String[] args) {
+        StringBuilder builder = new StringBuilder();
+
+        StringBuilder builder2 = builder.append("cpucode");
+
+        System.out.println("builder :" + builder);
+        System.out.println("builder2 :" + builder2);
+        System.out.println(builder == builder2);
+
+        builder.append("cpu");
+        builder.append("hello");
+        builder.append(true);
+        builder.append(100);
+
+        builder.append("hello").append("world").append(true).append(100);
+        System.out.println("builder:"+builder);
+    }
+}
+
+/*
+builder :cpucode
+builder2 :cpucode
+true
+builder:cpucodecpuhellotrue100helloworldtrue100
+*/