UTF-8 (BOM) prevents java compilation

I had an adventure tracking this one down lately, it seems that if your IDE saves files as UTF-8, the java compiler can’t always resolve the files.

Here’s the errors from the console output:

[INFO] ————————————————————————
[INFO] ————————————————————————
[INFO] Compilation failure

C:\Sandbox\Jars\example.jar\src\main\java\com\giantgeek\Example.java:[1,0] ‘class’ or ‘interface’ expected

C:\Sandbox\Jars\example.jar\src\main\java\com\giantgeek\Example.java:[1,1] illegal character: \187

C:\Sandbox\Jars\example.jar\src\main\java\com\giantgeek\Example.java:[1,2] illegal character: \191

Those character codes (\187 \191) may look a little familiar to some people, as they represent the Byte Order Mark (BOM) that prefixes a UTF-8 formatted file. If you look at them in a file editor (or text editor that doesn’t interpret UTF-8) they will look odd.

They look like “an i (two dots over), double right arrow, upside down question mark”.

Simple solution is to re-edit and save the file as ISO-8859-1.

An alternate approach that is available in some instances is to use the arguments to javac to allow the file encoding.



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