This page gives you a quick reference to get Guava dependency for Maven or Gradle projects. You can also download the Guava jar dependency, the link given at the "Download JAR File" section.
Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more.
Guava Maven Dependency
Copy below Guava maven dependency and paste in your project pom.xml file:
<!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>28.1-jre</version>
</dependency>
Guava Gradle Dependency
Copy below Guava Gradle dependency and paste in your project build.gradle file:
// https://mvnrepository.com/artifact/com.google.guava/guava
compile group: 'com.google.guava', name: 'guava', version: '28.1-jre'