Writing in a file.txt a Latex's format of tables with java -

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this question has answer here:

i'm trying automatically files.txt tables in latex's format, , want write java next string using .write

writer.write("\centering"+"\r\n");

but i'm not allowed so, eclipse marks "\centering" , says 

invalid escape sequence (valid ones  \b  \t  \n  \f  \r  \"  \'  \\ )

i tried separating "\"+\centering" didn't work either there way this?

you need escape backslash '\' doubling it: \\

writer.write("\\centering"+"\r\n");

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