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Java Printing

I have this piece of code for thermal printing ( I attached file) inside a large project, I need to print UTF-8 letters, but I can't, when I use 'DocFlavor flavor = [login to view URL]' with

'bytes = [login to view URL](StandardCharsets.UTF_8);'

the non-english (Arabic) letters change to a random symbols.

and when

I use 'DocFlavor.BYTE_ARRAY.TEXT_PLAIN_UTF_8' or


java return

null exception

'[login to view URL]: Cannot invoke "[login to view URL]()" because "service" is null'

Kĩ năng: Java

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Về Bên Thuê:
( 1 Nhận xét ) sulaymaniyah, Iraq

ID dự án: #30617237

14 freelancer chào giá trung bình$153 cho công việc này


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$150 USD trong 2 ngày
(76 Nhận xét)

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$140 USD trong 1 ngày
(53 Nhận xét)

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$200 USD trong 1 ngày
(39 Nhận xét)

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$250 USD trong 3 ngày
(9 Nhận xét)

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$30 USD trong 1 ngày
(22 Nhận xét)
(7 Nhận xét)

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$140 USD trong 7 ngày
(2 Nhận xét)

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$130 USD trong 2 ngày
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$70 USD trong 1 ngày
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$100 USD trong 3 ngày
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$250 USD trong 3 ngày
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$140 USD trong 7 ngày
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$240 USD trong 2 ngày
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