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+## 笔记
+
+整数
+
+~~~ java
+byte short int（默认）
+~~~
+
+浮点
+
+~~~java
+float double(默认
+~~~
+
+字符
+
+~~~java
+char
+~~~
+
+布尔
+
+~~~java
+boolean
+~~~
+
+字符串
+
+~~~java
+String
+~~~
+
+### 作业
+
+~~~java
+public class Java {
+    public static void main(String[] args) {
+        String name = "念哥";
+        int age = 20 ;
+        String gender = "未知";
+        double height = 175;
+        System.out.println("班主任："+ name);
+        System.out.println("年龄:"+ age);
+        System.out.println("性别:"+ gender);
+        System.out.println("身高:"+ height);
+        System.out.println("介绍：念哥，人美心善，身心健康，小帅，但不很帅，爆粗口贼丑。");
+    }
+}
+~~~
+