Quote Originariamente inviata da andbin Visualizza il messaggio
Prova questo, l'ho scritto e provato "al volo" (lo verificherò meglio appena ho tempo):
si blocca sulla seconda stampante:

Win32 Printer : NPI815782 (HP Color LaserJet CP2025n)
JobName -> Java Printing
RequestingUserName -> Corsaro
Copies -> 1-9999
Destination -> file:/C:/Users/Corsaro/workspace/ProveVarie/out.prn
OrientationRequested -> [portrait, landscape, reverse-landscape]
PageRanges -> [1-2147483647]
Media -> [na-letter, na-legal, executive, iso-a3, iso-a4, iso-a5, jis-b4, jis-b5, b, na-number-10-envelope, iso-designated-long, iso-c5, iso-b5, monarch-envelope, oufuko-postcard, 16K, Executive (JIS), 8K, ledger, A4/3, Executive JIS, Form-Source, Selez. automatica stam, Alim. manuale vass. 1, Vassoio 1, Vassoio 2, Vassoio 3, Vassoio 4, Non specificato, Normale, Prestampata, Intestata, Lucido, Perforata, Etichette, Fine, Riciclata, Colorata, Leggera 60-75 g/m2, Pesante 106-163 g/m2, Cartoncino >164 g/m2, Lucida 75-105 g/m2, Lucida pesante, Carta resistente, Busta]
MediaPrintableArea -> [(6.011,4.233)->(203.877,270.933)mm, (4.233,4.233)->(207.433,347.133)mm, (4.233,4.233)->(175.683,258.233)mm, (6.011,4.233)->(284.946,411.522)mm, (4.233,4.995)->(201.507,286.978)mm, (4.233,4.233)->(139.531,201.507)mm, (6.011,4.233)->(244.941,355.515)mm, (4.995,4.233)->(172.0,248.497)mm, (6.35,4.233)->(266.7,423.333)mm, (4.233,4.233)->(96.266,232.833)mm, (4.233,4.233)->(101.515,211.497)mm, (4.233,4.995)->(153.501,218.99)mm, (4.233,4.995)->(167.513,239.988)mm, (4.233,4.233)->(89.916,182.033)mm, (4.233,4.233)->(139.531,191.516)mm, (4.233,4.233)->(188.383,264.583)mm, (4.995,4.233)->(205.952,321.522)mm, (6.35,4.233)->(260.35,385.233)mm, (6.35,4.233)->(266.7,423.333)mm, (4.233,4.233)->(91.525,201.507)mm, (4.995,4.233)->(205.952,321.522)mm]
Fidelity -> [false, true]
SheetCollate -> [collated, uncollated]
SunAlternateMedia -> alternatate-media: iso-a4
Chromaticity -> [monochrome, color]
PrinterResolution -> [60000x60000 dphi]
Win32 Printer : ZDesigner ZM400 300 dpi (ZPL)
JobName -> Java Printing
RequestingUserName -> Corsaro
Copies -> 1-32000
Destination -> file:/C:/Users/Corsaro/workspace/ProveVarie/out.prn
OrientationRequested -> [portrait, landscape, reverse-landscape]
PageRanges -> [1-2147483647]
Media -> [manual]
MediaPrintableArea -> []
Fidelity -> [false, true]
SheetCollate -> [collated, uncollated]
Exception in thread "main" java.lang.NullPointerException