Best way to verify string is empty or null

Question

i am sure this must have been asked before in different ways - as isEmptyOrNull is so common yet people implement it differently. but i have below curious query in terms of

Answer 1

This one from Google Guava could check out "null and empty String" in the same time.

Strings.isNullOrEmpty("Your string.");

Add a dependency with Maven

  com.google.guava
  guava
  20.0

with Gradle

dependencies {
  compile 'com.google.guava:guava:20.0'
}