Change default enconding/charset by modiying single property

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1

I want to set UTF-8 as default encoding/charset for all tasks of my project. I expected that systemProp.file.encoding=UTF-8 will do the job but I still have to set each encoding/charset property manually:

compileJava { options.encoding = System.properties.'file.encoding' }

javadoc { options { charSet = System.properties.'file.encoding' encoding = System.properties.'file.encoding' docEncoding = System.properties.'file.encoding' } }

Is it possible to set default enconding/charset by modiying single property?