55

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

@@ -4,6 +4,6 @@ public class triangle extends shape {
 	@Override
 	public double area(int length,int width) {
 	System.out.println ("triangle ~area");
-	return 1/2*length*width;
+	return 1.0/2*length*width;
 }
 }
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