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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?
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The default value of Char is the character with a code point of 0.
Default value is false . Can be a Boolean object representing true or false , or can be null . Default value is null .
The null character (also null terminator) is a control character with the value zero. It is present in many character sets, including those defined by the Baudot and ITA2 codes, ISO/IEC 646 (or ASCII), the C0 control code, the Universal Coded Character Set (or Unicode), and EBCDIC.
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.
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