diff --git "a/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/DEMO03.java" "b/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/DEMO03.java"
new file mode 100644
index 0000000000000000000000000000000000000000..5e01806bff8d75fe353fb89e5fcc17779e1b4379
--- /dev/null
+++ "b/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/DEMO03.java"
@@ -0,0 +1,39 @@
+
+public class DEMO03 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		int s = getMax(50,100);
+		System.out.println("数组最大值为："+s);
+		int y = getmin(50,100);
+		System.out.println("数组最小值为："+y);
+		
+	}
+		
+	public static int getMax(int num1,int num2) {
+		int max;
+		
+		if(num1>num2) {
+			max=num1;
+		}else {
+			max=num2;
+		}
+		
+		return max;
+	}
+	public static int getmin(int num1,int num2) {
+		int min;
+		
+		if(num1>num2) {
+			min=num2;
+		}else {
+			min=num1;
+		}
+		
+		return min;
+	}
+
+
+
+}
+
diff --git "a/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/demo01.java" "b/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/demo01.java"
new file mode 100644
index 0000000000000000000000000000000000000000..78a111a393a3f61d02df01fd150a6df60772c873
--- /dev/null
+++ "b/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/demo01.java"
@@ -0,0 +1,25 @@
+
+public class demo01 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		int s = array(null);
+		System.out.println("数组最大值为："+s);
+	}
+		public static  int array(int [] arr){
+			int max=0;
+		int[] array = {10,20,50,100};
+		for(int i=1; i<4;i++) {
+			if(max<array[i]) {
+				max=array[i];
+			}
+			
+		}
+		return max;
+			
+		}
+
+
+	
+}
+
diff --git "a/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/demo2.java" "b/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/demo2.java"
new file mode 100644
index 0000000000000000000000000000000000000000..309f3f49b9581aa586bfe9a1303f7c14fb4026ca
--- /dev/null
+++ "b/\346\226\271\346\263\225\347\273\203\344\271\240/\345\217\266\351\231\210\350\276\211/demo2.java"
@@ -0,0 +1,16 @@
+
+public class demo2 {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		int[] array = {10,20,30,40};
+		System.out.print("[");
+		for(int i=0; i<3;i++) {
+			System.out.print(+array[i]+",");
+			}
+		System.out.print(+array[3]);
+		System.out.print("]");
+		}
+	
+
+}