Java char Keyword

In Java, char is a keyword that is used to declare a variable of the char data type. The char data type is a primitive type that represents a single Unicode character. It is a 16-bit unsigned integer, and it can store any Unicode character in the range '\u0000' (or 0) to '\uffff' (or 65535).

Here's an example of declaring a char variable in Java:

char ch;

You can also initialize a char variable when you declare it, like this:

char ch = 'A';

You can use escape sequences to represent special characters in a char literal. For example, the following code declares a char variable with the value '\n', which represents a newline character:

char newline = '\n';

You can use the char data type to perform various operations on characters. For example, you can compare two char values using relational operators such as == and <. You can also use the Character class, which provides utility methods for working with char values.

For example, the following code uses the Character.isLetter method to determine if a char value is a letter:

char ch = 'A';
if (Character.isLetter(ch)) {
  System.out.println("ch is a letter");
} else {
  System.out.println("ch is not a letter");
}

This code will print "ch is a letter", since 'A' is a letter.