Java Encoding issue

Question

When defining the below string on Java JDK 9 String s = "एक गाव में एक किसान" It throws the following error: Unmappable character (0xE0) for encoding US-ASCII I understand that it is UTF-8 encoded but as JDK 9 has default charset set as US-ASCII but I can't find how to change the default charset to UTF-8 from the code itself?

Answer 1

I want to change the default charset from within the code

Impossible¹.

The source code is just text, it doesn't define the encoding used to store that text.

You can however decide that your source code is US-ASCII, so the encoding doesn't matter (excl. UTF-16, UTF-32, etc), by specifying all non-ASCII characters as Unicode escapes:

String s = "\u090f\u0915 \u0917\u093e\u0935 \u092e\u0947\u0902 \u090f\u0915 \u0915\u093f\u0938\u093e\u0928"

Of course, it makes it difficult to know what the string says.

^{1) Since Java doesn't support BOM's.}