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+# java
+
+## 变量
+
+1.字符
+
+```java
+  char sex='男'；
+```
+
+
+
+2.整数
+
+```java
+byte short int[默认] long
+```
+
+
+
+3.小数
+
+```java
+ float double{默认}
+```
+
+
+
+4.字符串
+
+```java
+string
+```
+
+
+
+5.布尔
+
+```java
+boolean
+```
+
+
+
+## 作业
+
+```java
+package com.mxdx;
+
+public class noah {
+    public static void main(String[] args) {
+        String name="正常人";
+        char sex='五';
+        System.out.println("海绵宝宝不是"+name);
+        System.out.println("他有"+sex+"个好朋友");
+    }
+}
+
+```
+
+
+
+
+
+ 
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