2023年8月18日

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

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