Don’t use “new String(String)” constructor

Discovered by FindBugs.
Don’t use “new String()” constructor, just use an empty String

Discovered by FindBugs.
Don’t implicitely unbox the primitives, use the correct parser method

Discovered by FindBugs.
Use autoboxing instead of creating new Integer objects

Discovered by FindBugs.
Don’t iterate over the keys and look up the values, iterate over the entries

Discovered by FindBugs.
Don’t use String concatenation in loops, use a StringBuilder

Discovered by FindBugs.
Declare constants as static

Discovered by FindBugs.
Remove completely unused fields

Discovered by FindBugs.
Remove unused parameter

Discovered by FindBugs.