Character type (char)

char represents a single 16‑bit Unicode character. It can store any character from the Unicode standard (over 65,000 characters).

Range: 0 to 65,535 (unsigned).

Declaration:

char letter = 'A';
char digit = '9';
char symbol = '$';

Escape sequences:

Sequence	Meaning
\n	newline
\t	tab
\'	single quote
\"	double quote
\\	backslash

char newline = '\n';
char quote = '\'';

Unicode representation:

char omega = '\u03A9'; // Greek capital omega
char smiley = '\u263A'; // white smiley face

char as a numeric type:

char can be treated as an integer because it stores a numeric code. You can perform arithmetic:

char ch = 'A';
ch++; // now 'B'
int code = ch; // 66
System.out.println(ch + 1); // prints 67 (int)

Comparison:

if (ch >= 'A' && ch <= 'Z') {
  System.out.println("Uppercase letter");
}