Thanks for all replies, i solved it by downloading manually the .jar file from the following link and overwrite the existing jar downloaded by maven. (i don't know why it started working after manual download, but after all, its working)

http://commons.apache.org/proper/commons-lang/download_lang.cgi

The class was moved from package

org.apache.commons.lang3

to

org.apache.commons.text

You can replace the deprecated library easily:

In your build.gradle:

implementation 'org.apache.commons:commons-text:1.11.0'

And in your class using StringEscapeUtils make sure you import the correct class:

import org.apache.commons.text.StringEscapeUtils;

1.11.0 is currently the newest version (last checked February 20th 2024) but you can check the versions at maven: https://mvnrepository.com/artifact/org.apache.commons/commons-text

Maven will help you figure this out. I'm not a maven expert, so there might be a better way to do this, but I did it this way. Create a subdir somewhere (/tmp/blah for instance). And create pom.xml in that directory that looks like this:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-app</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-text</artifactId>
        <version>1.4</version>
    </dependency>
  </dependencies>
</project>

Then from that directory, ask maven with:

mvn dependency:tree

You'll get a ton of output, but at the end, this is all you end up with:

[INFO] com.mycompany.app:my-app:jar:1.0-SNAPSHOT
[INFO] \- org.apache.commons:commons-text:jar:1.4:compile
[INFO]    \- org.apache.commons:commons-lang3:jar:3.7:compile

That should be the complete list -- your project requires apache commons text, and that project requires commons lang3.

Either of escapeEcmaScript or escapeJson would be a suitable replacement.