Update README.md

edizor · web-flow · commit a6c286d79c4a · 2022-11-15T10:06:46.000+08:00
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diff --git a/core-java-modules/core-java-string-apis-2/README.md b/core-java-modules/core-java-string-apis-2/README.md
@@ -3,3 +3,4 @@
 This module contains articles about string APIs.
 
 ### Relevant Articles:
+- [Retain Only Digits and Decimal Separator in String](https://www.baeldung.com/java-string-retain-digits-decimal)

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`@@ -3,3 +3,4 @@`
`3`	`3`	`This module contains articles about string APIs.`
`4`	`4`
`5`	`5`	`### Relevant Articles:`
	`6`	`+- [Retain Only Digits and Decimal Separator in String](https://www.baeldung.com/java-string-retain-digits-decimal)`