com.google.guava:guava

Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. Guava has two code dependencies - javax.annotation per the JSR-305 spec and javax.inject per the JSR-330 spec.

guava gradle dependency

compile 'com.google.guava:guava:27.1-jre'

guava example for Android