From 73e75c5df8f0c77d61c058e99c441bac6d8d06bd Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Tue, 22 Sep 2026 13:58:24 +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/Demo06.java | 43 +++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 day08/src/com/inmind/string01/Demo06.java

diff --git a/day08/src/com/inmind/string01/Demo06.java b/day08/src/com/inmind/string01/Demo06.java
new file mode 100644
index 0000000..61cac24
--- /dev/null
+++ b/day08/src/com/inmind/string01/Demo06.java
@@ -0,0 +1,43 @@
+package com.inmind.string01;
+
+import java.util.Arrays;
+
+/*
+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 Demo06 {
+    public static void main(String[] args) {
+        //public String replace (CharSequence target, CharSequence replacement)
+        String s = "woaijava,javaaiwo";
+        //把所有的a替换为*
+        String newStr = s.replace("a", "*");
+        System.out.println(s);
+        System.out.println(newStr);
+
+    }
+
+    public static void getBytesMethod(String[] args) {
+        //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。
+        String s = "abc";
+        //将字符串转换为字节数组
+        byte[] bytes = s.getBytes();
+        System.out.println(bytes);//[B@4eec7777
+        //数组遍历，查看每个元素
+        for (int i = 0; i < bytes.length; i++) {
+            System.out.println(bytes[i]);
+        }
+        System.out.println(Arrays.toString(bytes));
+    }
+
+    public static void toCharArrayMethod(String[] args) {
+        //public char[] toCharArray () ：将此字符串转换为新的字符数组。
+        String s = "hellojava";
+        //得到字符串的每个字符
+        char[] chars = s.toCharArray();
+        System.out.println(chars);//chars中存放的是堆内存中的地址，打印的实现，直接输出该地址对应的数据
+    }
+}