Update README.md

johnA1331 · web-flow · commit 8de703a4d364 · 2019-12-19T18:44:35.000+08:00
diff --git a/core-java-modules/core-java-lang-math/README.md b/core-java-modules/core-java-lang-math/README.md
@@ -7,3 +7,4 @@
 - [Java 8 Unsigned Arithmetic Support](https://www.baeldung.com/java-unsigned-arithmetic)
 - [How to Separate Double into Integer and Decimal Parts](https://www.baeldung.com/java-separate-double-into-integer-decimal-parts)
 - [The strictfp Keyword in Java](https://www.baeldung.com/java-strictfp)
+- [Basic Calculator in Java](https://www.baeldung.com/java-basic-calculator)
