what's the default value of char?

Question

char c = '\u0000'; 

When I print c, it shows 'a' in the command line window.

So what's the default value of a char type field?

Someone said '\u0000' means null in Unicode; is that right?

Answer 1

The default value of a char attribute is indeed '\u0000' (the null character) as stated in the Java Language Specification, section §4.12.5 Initial Values of Variables .

In my system, the line System.out.println('\u0000'); prints a little square, meaning that it's not a printable character - as expected.