diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo1.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo1.java"
new file mode 100644
index 0000000000000000000000000000000000000000..d8f424bba82a5de8f3fbd064e91ed4891fd5bb9f
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo1.java"
@@ -0,0 +1,23 @@
+package lesson;
+
+import java.util.Scanner;
+
+public class Demo1 {
+
+	public static void main(String[] args) {
+		// TODO 自动生成的方法存根
+		Scanner scan=new Scanner(System.in);
+		
+		System.out.println("请输入第一个数字");
+		int num1=scan.nextInt();
+		
+		System.out.println("选择计算的类型");
+		char word =scan.next().charAt(0);
+		
+		System.out.println("请输入第二个数字");
+		
+		
+		
+	}
+
+}
diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo2.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo2.java"
new file mode 100644
index 0000000000000000000000000000000000000000..fe8a8d7c7bdfbfe43331888e03d4c0d8fd0100cc
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo2.java"
@@ -0,0 +1,28 @@
+package lesson;
+
+import java.util.Scanner;
+
+public class Demo2 {
+
+	public static void main(String[] args) {
+		// TODO 自动生成的方法存根
+		Scanner scan=new Scanner(System.in);
+		
+		System.out.println("请输入要打印的高");
+		int num1=scan.nextInt();
+		
+		for (int i = 0; i <= num1; i++) {
+			for (int j = 0; j <2*i-1 ; j++) {
+					System.out.print("*");
+			}
+			System.out.println();
+			
+				
+			}
+			
+		}
+		
+		
+		
+	}
+
diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo3.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo3.java"
new file mode 100644
index 0000000000000000000000000000000000000000..b5f9ee075464e2333a835801db56b491a77f70ae
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo3.java"
@@ -0,0 +1,23 @@
+package lesson;
+
+import java.util.Scanner;
+
+public class Demo3 {
+
+	public static void main(String[] args) {
+		// TODO 自动生成的方法存根
+Scanner scan=new Scanner(System.in);
+		
+		System.out.println("请输入要打印的高");
+		int a=scan.nextInt();
+		for (int i = 0; i < a; i++) {
+			for (int j =0; j<2*(a-i)-1 ; j++) {
+					System.out.print("*");
+			}
+			System.out.println();
+			
+		}
+		
+		
+	}
+}
diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo4.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo4.java"
new file mode 100644
index 0000000000000000000000000000000000000000..bca0f1f884e1cd02eea5f0fee285c4748ca04841
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo4.java"
@@ -0,0 +1,19 @@
+package lesson;
+
+import java.util.Scanner;
+
+public class Demo4 {
+
+	public static void main(String[] args) {
+		// TODO 自动生成的方法存根
+		 System.out.printf("输入任意一个数：");
+		    Scanner input = new Scanner(System.in);  //用于接收输入数据
+		    int n = input.nextInt();                 //将输入的数据赋给 n
+		    int a = 1;                               //用于存储阶乘的值
+		    for(int i = 1;i <= n;i++){
+		        a *= i;                              // 等同于 a = a*i; ---->阶乘运算公式
+		        System.out.printf("%d\n",a);         //每计算一次就打印一次
+		    }
+		    System.out.printf("%d的阶乘为：%d\n",n,a); //打印最后计算的结果
+}
+}
\ No newline at end of file
diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo5.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo5.java"
new file mode 100644
index 0000000000000000000000000000000000000000..6344a2d5dda0118e4541cd6f217e01b73b89da97
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo5.java"
@@ -0,0 +1,75 @@
+package lesson;
+
+import java.util.Scanner;
+
+public class Demo5 {
+
+	public static void main(String[] args) {
+		// TODO 自动生成的方法存根
+		Scanner scan=new Scanner(System.in);
+		
+		System.out.println("请输入想要计算的图形面积");
+		System.out.println("1、长方形");
+		System.out.println("2、正方形");
+		System.out.println("3、三角形");
+		System.out.println("4、圆形");
+		
+		int a=scan.nextInt();
+		switch (a) {
+		case 1:
+			System.out.println("请输入长方形的宽");
+			int q=scan.nextInt();
+			
+			System.out.println("请输入长方形的高");
+			int b=scan.nextInt();
+			System.out.println("长方形面积为"+chang(q,b));
+			break;
+			
+		case 2:
+			System.out.println("请输入正方形的宽");
+			int c=scan.nextInt();
+			
+			System.out.println("正方形面积为"+zheng(c));
+			break;
+			
+		case 3:
+			System.out.println("请输入三角形的底");
+			int e=scan.nextInt();
+			
+			System.out.println("请输入三角形的高");
+			int f=scan.nextInt();
+			System.out.println("三角形面积为"+san(e,f));
+			break;
+			
+		case 4:
+			System.out.println("请输入圆的半径");
+			int l=scan.nextInt();
+			
+			System.out.println("圆的面积为"+yaun(l));
+			break;
+		default:
+			System.out.println("输入类型错误");
+			break;
+		}
+		
+	}
+
+	public static int chang(int q,int b){
+		int c=q*b;
+		return c;
+	}
+	
+	public static int zheng(int c){
+		int g=c*c;
+		return g ;
+	}
+	
+	public static double san(int e,int f){
+		int y=e*f/2;
+		return y;
+	}
+	public static double yaun(int l){
+		double r=3.14*l*l;
+		return r;
+	}
+}
diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo6.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo6.java"
new file mode 100644
index 0000000000000000000000000000000000000000..c86950ad262542a9d9b57a35e53334da2d191192
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\351\253\230\345\245\225/Demo6.java"
@@ -0,0 +1,33 @@
+package lesson;
+
+import java.util.Scanner;
+
+import javax.swing.text.ChangedCharSetException;
+
+public class Demo5 {
+
+	public static void main(String[] args) {
+		// TODO 最大值
+		Scanner scanner=new Scanner(System.in);
+		int []a=new int[10];
+		for (int i = 0; i < a.length; i++) {
+			System.out.println("输入数字");
+		 a[i]=scanner.nextInt();
+		}
+		int max=a[0];
+		int min=a[0];
+		for(int k=1;k<10;k++) {
+			if(max<a[k]) {
+				max=a[k];
+			}
+		}
+		for(int g=1;g<10;g++) {
+			if(min>a[g]) {
+				min=a[g];
+				}
+		}
+		System.out.println("最大值为"+max);
+		System.out.println("最小值为"+min);
+	}
+	
+}