Assertion: expression | /r/HasProperty | boolean
Facets:
Source sentences:
text: All expressions that contain relational operators , such as the less than sign (<), are Boolean.
text: Note that Java's if statement differs from that of C++ in that the expression contained in the parentheses must be boolean .
text: Java'sloop behaves like C++'sloop (the difference between the two is that Java's expression must be boolean.)