diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h1.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h1.java"
new file mode 100644
index 0000000000000000000000000000000000000000..2cbdb8afb568bb33f9fdc47de3cf264001677f5b
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h1.java"
@@ -0,0 +1,26 @@
+package lession;
+
+import java.util.Scanner;
+
+public class Demo01 {
+
+	public static void main(String[] args) {
+	
+		Scanner scanner =new Scanner(System.in);
+		System.out.println("请输入n的值");
+		int n=scanner.nextInt();
+		System.out.println("请再输入m的值");
+		int m=scanner.nextInt();
+		System.out.println("最终结果为："+num(n,m));
+		
+	}
+
+	public static int  num(int n, int m) {
+		int sum=1;
+		for (int i = 1; i <=n; i++) {
+			sum*=m;
+		}
+		return sum;
+	}
+
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h2.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h2.java"
new file mode 100644
index 0000000000000000000000000000000000000000..275a4ad55416306c617da8db04c2732746ebc09b
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h2.java"
@@ -0,0 +1,35 @@
+package lession;
+
+import java.util.Random;
+import java.util.Scanner;
+
+public class Demo02 {
+
+	public static void main(String[] args) {
+		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.println("请输入一个值");
+		int b=scanner.nextInt();
+		System.out.println("出现了："+num(b,a));
+		
+	}
+
+	public static int  num(int d,int[] a) {
+		int c;
+		int sum=0;
+		for (int i = 0; i < 20; i++) {
+			c=a[i];
+			System.out.print(c+"\t");
+			if (c==d) {
+				sum++;
+			}
+		}
+		System.out.println();
+		return sum;
+	}
+
+}
diff --git "a/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h3.java" "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h3.java"
new file mode 100644
index 0000000000000000000000000000000000000000..54f6c78d89d2430fc2dfa26c9998d21c8e31d12e
--- /dev/null
+++ "b/java\347\254\254\345\215\201\346\254\241\344\275\234\344\270\232/\345\210\230\351\207\221\346\265\267/h3.java"
@@ -0,0 +1,47 @@
+package lession;
+
+import java.util.Random;
+
+public class Demo03 {
+
+	public static void main(String[] args) {
+		;
+		Random random =new Random();
+		int a[]=new int[10];
+		System.out.println("改变前");
+		for (int i = 0; i < 10; i++) {
+			a[i]=random.nextInt(100)+1;
+			System.out.print(a[i]+"\t");
+		}
+		int max=a[0];
+		int min=a[0];
+		for (int i = 1; i < 10; i++) {
+			if (max<a[i]) {
+				max=a[i];
+			}
+		}
+		for (int i = 1; i < 10; i++) {
+			if (min>a[i]) {
+				min=a[i];
+			}
+	}
+		System.out.println();
+		num(max,min,a);
+}
+
+	public static void num(int max, int min,int[]a) {
+		int d;
+		d=a[0];
+		a[0]=max;
+		max=d;
+		int g;
+		g=a[9];
+		a[9]=min;
+		min=g;
+		System.out.println("改变后");
+		for (int i = 0; i < 10; i++) {
+			System.out.print(a[i]+"\t");
+		}
+		
+	}
+}
\ No newline at end of file