1 ImplicitFinal.java:14:13: compiler.err.try.resource.may.not.be.assigned: r
   2 ImplicitFinal.java:20:13: compiler.err.try.resource.may.not.be.assigned: r1
   3 ImplicitFinal.java:26:13: compiler.err.try.resource.may.not.be.assigned: r2
   4 ImplicitFinal.java:32:13: compiler.err.try.resource.may.not.be.assigned: r3
   5 4 errors