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+# java
+
+## 变量
+
+1.字符
+
+```JAVA
+char sex ='男'；
+```
+
+
+
+2.整数
+
+```java
+byte short int long
+```
+
+
+
+3.小数
+
+```java
+float double[默认]
+```
+
+
+
+4.字符串
+
+```java
+String
+```
+
+1.布尔
+
+```java
+boolean
+```
+
+# 作业
+
+```java
+public class bb {
+    public static void main(String[] args){
+        String name ="张念山";
+        int age =18;
+        String gender ="男";
+        System.out.println("我的班主任是"+name);
+        System.out.println("性别："+gender);
+        System.out.println("他永远"+age);
+        System.out.println("是帅哥");
+        System.out.println("是人见人爱，花见花开的"+name+"大帅哥");
+    }
+}
+
+```
+
+
+