Page 115 - computer science (868) class 11
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Let’s Revisit
♦ Every individual component used in Java code is known as a Token. It is also known as the building block of Java Programs.
♦ There are six different types of tokens found in Java.
♦ Identifiers are user-defined names required to name a class, variables or a method.
♦ Literals are the values that are required to be stored in variables for further processing. There are many types of literals available
in Java.
♦ Punctuators are the special characters that have some special jobs.
♦ Separators are used to separate the variables or characters.
♦ Operators use operands to perform mathematical and non-mathematical operations to give some results.
♦ Escape sequences are the characters preceded by '\' to perform special operations such as inserting a horizontal tab, inserting
a new line, etc.
♦ There are two different types of data: primitive and non-primitive.
♦ In Java, there are eight different types of primitive data and four types of non-primitive data.
♦ Arithmetic expressions contain variables, constants and arithmetic operators and are used to do calculations.
♦ There are two different types of expressions: Pure and Mixed.
♦ The process of changing the value of one type to another type is known as type conversion or type casting. There are two
different types of conversions: implicit and explicit.
♦ The wrapper class is used to convert the primitive data type to its object and vice versa. Each primitive data type has a wrapper
class of its own.
MIND DRILL
Solved Questions
A. Tick ( ) the correct option:
1. In Java, what name is given to every individual component?
a. Token b. Assignment
c. Operators d. None of these
2. Which of the following is not a type of token?
a. Identifier b. Separators
c. Punctuator d. Types and casting
3. What is a named memory location where a value is being stored?
a. Separator b. Variable
c. Data type d. Sum
4. int a=5;
What is “a” in the above code?
a. Punctuator b. String
c. Identifier d. Literal
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