Update README.md

johnA1331 · web-flow · commit cf526e0a6e3b · 2021-03-17T23:05:02.000+08:00
diff --git a/core-java-modules/core-java-lang-4/README.md b/core-java-modules/core-java-lang-4/README.md
@@ -2,4 +2,4 @@
 
 This module contains articles about core features in the Java language
 
-- TODO
+- [The Java final Keyword – Impact on Performance](https://www.baeldung.com/java-final-performance)

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`@@ -2,4 +2,4 @@`
`2`	`2`
`3`	`3`	`This module contains articles about core features in the Java language`
`4`	`4`
`5`		`-- TODO`
	`5`	`+- [The Java final Keyword – Impact on Performance](https://www.baeldung.com/java-final-performance)`