Clean up Java style (#5990)

Also make equivalent changes in C++ where applicable.

Co-authored-by: Sriman Achanta <68172138+srimanachanta@users.noreply.github.com>

wpilibjExamples/src/main/java/edu/wpi/first/wpilibj/commands/trapezoidprofilecommand/ReplaceMeTrapezoidProfileCommand.java

@@ -22,8 +22,8 @@ public class ReplaceMeTrapezoidProfileCommand extends TrapezoidProfileCommand {
           // Use current trajectory state here
         },
         // Goal state
-        () -> new TrapezoidProfile.State(),
+        TrapezoidProfile.State::new,
         // Current state
-        () -> new TrapezoidProfile.State());
+        TrapezoidProfile.State::new);
   }
 }