diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo01.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo01.java"
new file mode 100644
index 0000000000000000000000000000000000000000..6d050506bc3fd4f7f724363bc7febb132fdc4b14
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo01.java"
@@ -0,0 +1,52 @@
+import java.util.Scanner;
+
+import javax.swing.Spring;
+
+public class A {
+
+	public static void main(String[] args) {
+		Scanner scanner=new Scanner(System.in);
+		System.out.println("请输入计算方法");
+		char a=scanner.next().charAt(0);
+		System.out.println("请输入第一个数");
+		int b=scanner.nextInt();
+		System.out.println("请输入第二个数");
+		int c=scanner.nextInt();
+		switch (a) {
+		case '+':
+			System.out.println("两数之和是"+jia(b,c));
+			break;
+		case '-':
+			System.out.println("两数之差是"+jian(b,c));
+			break;
+		case '*':
+			System.out.println("两数之积是"+cheng(b,c));
+			break;
+		case '/':
+			System.out.println("两数之商是"+chu(b,c));
+			break;
+		case '%':
+			System.out.println("两数之余是"+yu(b,c));
+			break;
+		default:
+			System.out.println("输入错误");
+			break;
+		}
+
+	}
+	public static int jia(int b,int c) {
+		return b+c;
+	}
+	public static int jian(int b,int c) {
+		return b-c;
+	}
+	public static int cheng(int b,int c) {
+		return b*c;
+	}
+	public static int chu(int b,int c) {
+		return b/c;
+	}
+	public static int yu(int b,int c) {
+		return b%c;
+	}
+}
diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo02.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo02.java"
new file mode 100644
index 0000000000000000000000000000000000000000..d82111499ae1330b6f77d1323ab97bef3ab61525
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo02.java"
@@ -0,0 +1,18 @@
+
+public class B {
+
+	public static void main(String[] args) {
+		int [] a= {66,77,88,99,22,33};
+		aa(a);
+		System.out.println("最大值是"+aa(a));
+	}
+	public static int aa(int[] a) {
+		int max=a[0];
+		for (int i = 1; i < a.length; i++) {
+			if (a[i]>=max) {
+				max=a[i];
+			}
+		}
+		return max;
+	}
+}
diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo03.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo03.java"
new file mode 100644
index 0000000000000000000000000000000000000000..f196d706e0b575268063ea43ebc5fb9d4897916f
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo03.java"
@@ -0,0 +1,18 @@
+import java.util.Scanner;
+
+public class C {
+
+	public static void main(String[] args) {
+		Scanner scanner=new Scanner(System.in);
+		int a;
+		System.out.println("请输入高");
+		a=scanner.nextInt();
+		for (int i = 1; i <= a; i++) {
+			for (int j = 1; 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/\345\274\240\345\256\217/Demo04.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo04.java"
new file mode 100644
index 0000000000000000000000000000000000000000..5c3c96f958def530c0694df9a59324797f7e0770
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo04.java"
@@ -0,0 +1,18 @@
+import java.util.Scanner;
+
+public class D {
+
+	public static void main(String[] args) {
+		Scanner scanner=new Scanner(System.in);
+		int a;
+		System.out.println("请输入高");
+		a=scanner.nextInt();
+		for (int i = 1; i <= a; i++) {
+			for (int j = 1; 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/\345\274\240\345\256\217/Demo05.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo05.java"
new file mode 100644
index 0000000000000000000000000000000000000000..7d9cab0c3bbacda80f9ff1eb739d217008e0a557
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo05.java"
@@ -0,0 +1,22 @@
+import java.util.Scanner;
+
+public class E {
+
+	public static void main(String[] args) {
+		Scanner scanner = new Scanner(System.in);
+		System.out.println("请输入阶乘数");
+		int a=scanner.nextInt();
+		int b=0;
+		int c=1;
+		int d=0;
+		for (int i = 1; i <= a; i++) {
+			for (int j = 1; j <= i; j++) {
+				b=j;
+			}
+			c=b*c;
+			d=d+c;
+		}
+		System.out.println(d);
+	}
+
+}
diff --git "a/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo06.java" "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo06.java"
new file mode 100644
index 0000000000000000000000000000000000000000..92733b2f66e487abea4621e15ddc29d19bfae1a6
--- /dev/null
+++ "b/Java\347\254\254\344\271\235\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo06.java"
@@ -0,0 +1,57 @@
+import java.util.Scanner;
+
+public class F {
+
+	public static void main(String[] args) {
+		Scanner scanner = new Scanner(System.in);
+		System.out.println("请输入计算图形");
+		System.out.println("1.正方形");
+		System.out.println("2.长方形");
+		System.out.println("3.三角形");
+		System.out.println("4.圆形");
+		int a = scanner.nextInt();
+		
+		switch (a) {
+		case 1:
+			System.out.println("请输入正方形边长");
+			int b= scanner.nextInt();
+			System.out.println("正方形面积是"+zheng(b));
+			break;
+		case 2:
+			System.out.println("请输入长方形的长");
+			int c= scanner.nextInt();
+			System.out.println("请输入长方形的宽");
+			int d= scanner.nextInt();
+			System.out.println("长方形面积是"+chang(c,d));
+			break;
+		case 3:
+			System.out.println("请输入三角形的高");
+			int e= scanner.nextInt();
+			System.out.println("请输入三角形的底边长");
+			int f= scanner.nextInt();
+			System.out.println("三角形面积是"+san(e,f));
+			break;
+		case 4:
+			System.out.println("请输入圆形的半径");
+			double g= scanner.nextDouble();
+			System.out.println("圆形的面积是"+yuan(g));
+			break;
+			
+		default:
+			break;
+		}
+
+	}
+	public static int zheng(int b) {
+		return b*b;
+	}
+	public static int chang(int c,int d) {
+		return c*d;
+	}
+	public static int san(int e,int f) {
+		return e*f/2;
+	}
+	public static double yuan(double g) {
+		return 3.14*g*g;
+	}
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo01.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo01.java"
new file mode 100644
index 0000000000000000000000000000000000000000..98358c750542705c1aed8f9e004ec5a431388efd
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo01.java"
@@ -0,0 +1,20 @@
+import java.util.Scanner;
+
+public class Demo01 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		Scanner Scanner=new Scanner(System.in);
+		System.out.print("请输入x值");
+			int x=Scanner.nextInt();
+		System.out.print("请输入y值");
+			int y=Scanner.nextInt();
+		System.out.print("请输入z值");
+			int z=Scanner.nextInt();
+			
+			int s=x*x*x+y*y*y+z*z*z;
+		System.out.print("S的值为："+s);
+					
+	}
+
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo02.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo02.java"
new file mode 100644
index 0000000000000000000000000000000000000000..0a2627654b2f1c7a25364043fbc41b27e723be62
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo02.java"
@@ -0,0 +1,19 @@
+import java.util.Scanner;
+
+public class Demo02 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		Scanner Scanner=new Scanner(System.in);
+		System.out.print("请输入m值");
+			int m=Scanner.nextInt();
+		System.out.print("请输入n值");
+			int n=Scanner.nextInt();
+			int s=m;
+		for (int i = 2; i <=n; i++) {
+			 s=s*m;
+		}
+		System.out.print("m的n次幂为"+s);
+	}
+
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo03.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo03.java"
new file mode 100644
index 0000000000000000000000000000000000000000..0f7a3fc1de9fb63f1c4e66afe255531403a6805d
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo03.java"
@@ -0,0 +1,28 @@
+import java.util.Random;
+import java.util.Scanner;
+
+public class Demo03 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		Scanner Scanner=new Scanner(System.in);
+		Random random=new Random();
+		int[] a=new int[20];
+		for (int i = 0; i < 20; i++) {
+			a[i]=random.nextInt(10)+1;
+			System.out.print(a[i]+"\t");
+		}
+		System.out.println();
+		System.out.println("请输入0~10的数");
+		int b=Scanner.nextInt();
+		int s=0;
+		for (int i = 0; i < a.length; i++) {
+			if(b==a[i]){
+				s++;
+			}
+			
+		}
+		System.out.println("该数字出现的次数为"+s);
+	}
+	
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo04.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo04.java"
new file mode 100644
index 0000000000000000000000000000000000000000..e79f546f66a5c107cde9de27c283133fefc922ee
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\274\240\345\256\217/Demo04.java"
@@ -0,0 +1,31 @@
+import java.util.Random;
+import java.util.Scanner;
+
+public class Demo04 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		Scanner Scanner=new Scanner(System.in);
+		Random random=new Random();
+		int[] a=new int[10];
+		int max=1;
+		int min=1;
+		for (int i = 0; i < 10; i++) {
+			a[i]=random.nextInt(100)+1;
+			if (max<a[i]) {
+				max=a[i];
+		}if(min>a[i]) {
+			min=a[i];
+		}
+		int temp = a[0];
+		a[0]=max;
+		max=temp;
+		
+		int temp1 = min;
+		min=a[9];
+		a[9]=temp1;
+		System.out.println(a[i]);
+	}
+		
+	}
+}