"Use a set of characters to write a program. Computer hardware and software recognize these characters. Java character set defines the basic elements that may contain programs written in a language. ASCII and Unicode are two encodings of characters. Unicode is a set of universal characters. It is a two-byte set of characters, representing nearly all the characters of nearly all languages. Originally, ASCII used seven bits to encode each character up to eight. Get the Computer Science for Class 10 ICSE solutions on the Extramarks website. The Computer Science for Class 10 ICSE solutions on the Extramarks website. The Computer Science for Class 10 ICSE study materials is on Extramarks.

Java uses the Unicode character set because it intends to represent all major languages of the world's writing schemes. All characters are grouped into symbols known as tokens in a Java program. Java includes five tokens types-keywords, identifiers, literals, operators and separators reserved. There are some words in a Java program that can't be used as object or variable names. These words are called words that are ""reserved."" In Java, programmers use Identifiers to name things; such as variables, methods, fields, classes, interfaces, exceptions, packages, etc. Literals are a sequence of characters representing constant values in variables to be stored. Operators are Java tokens with a special symbol and predetermined meaning. Separators help to define a program's structure. A data type in a language of programming is a set of values with predefined characteristics. Java supports two types of data types: primitive types of data and type of reference data. Syllabus of Computer Science for Class 10 ICSE. Syllabus of Computer Science for Class 10 ICSE are on the Extramarks website.

Tokens in Java are basic building blocks for building the programs. A token can be a keyword, an identifier, a constant, an operator or a delimiter. Keywords are the words that convey special meaning and perform a task that is predefined. The identifier is a sequence of characters that are used to denote variables, methods, and class names. Literals are a sequence of characters representing constant values in variables to be stored. Literals are often called constants. Punctuators are the separators that are used to organize declarations. Operators are special symbols or tokens on a number of operands to perform specific tasks. Students will get the Syllabus of Computer Science for Class 10 ICSE on the Extramarks.
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