111

jshERP-boot/src/main/java/com/jsh/erp/utils/OverRide.java

-package com.jsh.erp.utils;
-
-public class OverRide {
-		}
-		class Shape {
-		public int area(int length,int width) {
-		System.out.println ("Shape~area");
-		return length*width;
-		}
-		}
-		class triangle extends Shape{
-		@Override
-		public int area(int length,int width) {
-		System.out.println ("triangle ~area");
-		return 1/2*length*width;
-		}
-}

jshERP-boot/src/main/java/com/jsh/erp/utils/shape.java

+package override;
+
+public class shape {
+	public double area(int length,int width) {
+	System.out.println ("Shape~area");
+	return length*width;
+	}
+}

jshERP-boot/src/main/java/com/jsh/erp/utils/triangle.java

+package override;
+
+public class triangle extends shape {
+	@Override
+	public double area(int length,int width) {
+	System.out.println ("triangle ~area");
+	return 1/2*length*width;
+}
+}
\ No newline at end of file