NPE if WORDNET_HOME environment variable is not set

[nileger]

Problem

In WordNetWrapper.initline 72 we check for the WORDNET_HOME environment variable: !System.getenv("WORDNET_HOME").isEmpty() && !System.getenv("WORDNET_HOME").isBlank().

However, if no environment variable is set, System.getenv("WORDNET_HOME") returns null. Consequently, !System.getenv("WORDNET_HOME").isEmpty() throws a NPE.

Solution

StringUtils.isNotEmpty(System.getenv("WORDNET_HOME"));