barcode value change randomly

[kaz]

Hello,

I am generating the barcode using code_128

but i could not corect result in specific number.

And change result randomly.

if some one know this problem how did you fix this?

testdata////

"0QP142-001"

"0QP431-001"

"0QN964-001"

int width = 100

int height = 50

code///

Writer writer = new MultiFormatWriter();

BitMatrix = writer.encode(content,BarcodeFormat.code_128,width,height);

BufferedImage image = MatrixToImageWriter.toBufferedImage(bitMatrix);

ImageIO.writer(image,"png",new File(output));