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Variables, Data Types, and Operators
Content
- Variables in Java
- Data Types
- Operators
- Example
- Activity
- Updated on 10/09/2024
- 450 Views
Variables in Java
Variables are used to store data that can be used and manipulated throughout your program. Declaration syntax: dataType variableName = value;
Data Types
Primitive Data Types:
int, float, double, char, boolean, etc.
Strings, arrays, classes, etc.
Non-Primitive Data Types:
Operators
- Arithmetic Operators:
- Relational Operators:
- Logical Operators:
+, -, *, /, %
==, !=, >, <, >=, <=
&&, ||, !
Example
Example of using variables, data types, and operators in Java.
Activity
Create a Java program that declares variables of different types and prints their values.
Quiz
1. Which data type is used to store integer values in Java?
- a) int
- b) double
- c) char
- d) boolean
2. How do you declare a variable in Java?
- a) variableName dataType = value;
- b) dataType = variableName value;
- c) dataType variableName = value;
- d) value dataType = variableName;
3. Which operator is used for addition in Java?
- a) -
- b) *
- c) /
- d) +
4. What is the default value of a boolean variable?
- a) 0
- b) 1
- c) false
- d) true
5. What will be the output of the following code?
- a) 5
- b) 10
- c) 15
- d) 510