How to check whether an Integer is null or zero in Java?

With Java 8:

if (Optional.ofNullable(myInteger).orElse(0) != 0) {
  ...
}

Note that Optional may help you to completely avoid the if condition at all, depending on your use case...

Since StringUtils class is mentioned in the question, I assume that Apache Commons lib is already used in the project.

Then you can use the following:

if (0 != ObjectUtils.defaultIfNull(myInteger, 0)) { ... }

Or using static import:

if (0 != defaultIfNull(myInteger, 0)) { ... }