666

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

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

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

 package com.jsh.erp.utils;
 
-public class triangle extends shape {
+public class Triangle extends Shape {
 	@Override
-	public double area(int length,int width) {
+	public double area(double length,double width) {
 	System.out.println ("triangle ~area");
 	return 1.0/2*length*width;
 }