7. Variables and Expressions
Variables serve as essential storage locations in programming, allowing for data manipulation during program execution. Expressions, formed from combinations of variables, values, and operators, yield results essential for mathematical and logical operations. Java provides various operators, such as arithmetic and relational, crucial for data handling and manipulation in the programming context.
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What we have learnt
- Variables are storage locations used to store and modify data in programming.
- Expressions evaluate to produce results based on combinations of variables and operators.
- Java supports different data types and operators to facilitate various programming tasks.
Key Concepts
- -- Variable
- A storage location in memory used to hold data that can change during program execution.
- -- Expression
- A combination of variables, operators, and values that evaluates to a single result.
- -- Data Type
- A classification that specifies which type of value a variable can hold, such as integers, floating-point numbers, or characters.
- -- Operators
- Symbols that perform operations on one or more operands, including arithmetic, relational, logical, and assignment.
- -- Casting
- The process of converting a variable from one data type to another in programming.
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