From 18e9d0a2c6be5fe36eb4eda1ed19b3625e0e981e Mon Sep 17 00:00:00 2001
From: NCJOAQ <2627723488@qq.com>
Date: Fri, 27 Jun 2025 19:30:45 +0800
Subject: [PATCH] =?UTF-8?q?=E8=BF=99=E4=BC=9A=E6=98=AF=E6=8E=A5=E4=B8=8B?=
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---
 src/class10/ScannerDemo1.java  | 19 +++++++++++++++++++
 src/class11/OperatorDemo1.java | 25 +++++++++++++++++++++++++
 src/class9/TypeDemo2.java      | 22 ++++++++++++++++++++++
 3 files changed, 66 insertions(+)
 create mode 100644 src/class10/ScannerDemo1.java
 create mode 100644 src/class11/OperatorDemo1.java
 create mode 100644 src/class9/TypeDemo2.java

diff --git a/src/class10/ScannerDemo1.java b/src/class10/ScannerDemo1.java
new file mode 100644
index 0000000..4825cc6
--- /dev/null
+++ b/src/class10/ScannerDemo1.java
@@ -0,0 +1,19 @@
+package class10;
+
+import java.util.Scanner;
+
+public class ScannerDemo1 {
+    public static void main(String[] args) {
+        printUserInfo();
+
+
+    }
+    public static void printUserInfo(){
+        Scanner sc = new Scanner(System.in);
+        System.out.println("请输入用户名：");
+        String name = sc.next();
+        System.out.println("请输入年龄：");
+        int age = sc.nextInt();
+        System.out.println("用户名是："+name+"，年龄是："+age);
+    }
+}
diff --git a/src/class11/OperatorDemo1.java b/src/class11/OperatorDemo1.java
new file mode 100644
index 0000000..cda27f9
--- /dev/null
+++ b/src/class11/OperatorDemo1.java
@@ -0,0 +1,25 @@
+package class11;
+
+public class OperatorDemo1 {
+    public static void main(String[] args) {
+        print(10,20);
+        print2();
+    }
+    public static void print(int a,int b){
+        System.out.println(a+b);
+        System.out.println(a-b);
+        System.out.println(a*b);
+        System.out.println(a/b);
+        System.out.println(a%b);
+        System.out.println(a>b);
+        System.out.println(a<b);
+    }
+    public static void print2(){
+        int a = 5;
+        System.out.println("abc"+ a); // abc5
+        System.out.println(a+5); // 10
+        System.out.println(a+'a'+"atheism");// atheima5
+        System.out.println("atheism"+a + 'a');// atheism5a
+
+    }
+}
diff --git a/src/class9/TypeDemo2.java b/src/class9/TypeDemo2.java
new file mode 100644
index 0000000..7eb6f91
--- /dev/null
+++ b/src/class9/TypeDemo2.java
@@ -0,0 +1,22 @@
+package class9;
+
+public class TypeDemo2 {
+    public static void main(String[] args) {
+        System.out.println(calc2((byte)110,(byte)120));
+        System.out.println(calc3((byte)110,(byte)120));
+
+        System.out.println(calc(10,20,30,'a'));
+        System.out.println(calc(10,20,30.0,'a'));
+    }
+    // 需求：接收各种类型的数据运算
+    public static double calc(int a,int b,double c,char r){
+        return a + b + c+ r;
+    }
+    public static int calc2(byte a, byte b){
+        return a + b;
+    }
+    public static int calc3(byte a, byte b){
+        byte c = (byte) (a + b);
+        return c;
+    }
+}