From 8d7660b26fe7186afb8621d3deb2424f593869bc Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Wed, 22 Jul 2026 14:10:51 +0800
Subject: [PATCH] =?UTF-8?q?day08-=E5=B8=B8=E7=94=A8=E7=B1=BB-String-?=
 =?UTF-8?q?=E7=9A=84=E8=BD=AC=E6=8D=A2=E6=96=B9=E6=B3=95=5Freplace=5FtoCha?=
 =?UTF-8?q?rArray=5FgetBytes?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 day08/src/com/inmind/string01/Demo07.java | 40 +++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 day08/src/com/inmind/string01/Demo07.java

diff --git a/day08/src/com/inmind/string01/Demo07.java b/day08/src/com/inmind/string01/Demo07.java
new file mode 100644
index 0000000..f198c10
--- /dev/null
+++ b/day08/src/com/inmind/string01/Demo07.java
@@ -0,0 +1,40 @@
+package com.inmind.string01;
+/*
+5.常用类-String-的转换方法_replace_toCharArray_getBytes
+
+public char[] toCharArray () ：将此字符串转换为新的字符数组。
+public byte[] getBytes () ：使用平台的默认字符集将该 String编码转换为新的字节数组。
+public String replace (CharSequence target, CharSequence replacement) ：将与target匹配的字符串使用replacement字符串替换。
+ */
+public class Demo07 {
+    public static void main(String[] args) {
+        //public String replace (CharSequence target, CharSequence replacement) ：将与target匹配的字符串使用replacement字符串替换。
+        String str = "王宝强演了一个电视剧，<<士兵突击>>，但是王宝强很忧伤";
+        //将王宝强改为王宝宝
+        String newStr = str.replace("王宝强", "王宝宝");
+        System.out.println("替换之后的字符串："+newStr);
+        System.out.println("替换之前的字符串："+str);
+    }
+    public static void getBytesMethod(String[] args) {
+        //public byte[] getBytes () ：使用平台的默认字符(utf-8完全兼容ascii码表)集将该 String编码转换为新的字节数组。
+        String str = "01234";//ascii码表：48~51
+        byte[] bytes = str.getBytes();
+        System.out.println(bytes);//[B@4eec7777
+        //遍历数组
+        for (int i = 0; i < bytes.length; i++) {
+            System.out.println(bytes[i]);
+        }
+    }
+
+    public static void toCharArrayMethod(String[] args) {
+        //public char[] toCharArray () ：将此字符串转换为新的字符数组。
+        String s1 = "hello world";
+        //将s1字符串转换为字符数组
+        char[] chars = s1.toCharArray();
+        System.out.println(chars);//[C@1b6d3586],由于println方法在打印字符数组时的区别
+        //遍历数组
+        for (int i = 0; i < chars.length; i++) {
+            System.out.println(chars[i]);
+        }
+    }
+}