[FLINK-3560] Examples shouldn't always print usage statement

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Fix Version/s: 1.1.0
• Component/s: Examples
• Assignee: Till Rohrmann
• Reporter: Till Rohrmann
• Created: 01/Mar/16 16:19
• Updated: 25/Apr/16 09:08
• Resolved: 25/Apr/16 09:08

Description

At the moment all our examples print a usage statement no matter whether the parameters have been provided or not. This can be confusing for people because an usage statement is usually only printed if one has specified a wrong parameter or if a parameter is missing.

I propose to remove the unchecked printing of the usage statement.