Cp

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Used to specify the set of values and their operations

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Data Types

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Fundamental Data Types in Java

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Primitive Data Types

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Data Type that is useful for saving memory space in large arrays. 8-Bit Signed Integer.

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Byte

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Data Type that is also useful for saving memory space in large arrays. 16-Bit Signed Integer.

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Short

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Int

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Data Type used when a wider range than int is needed. 64-bit signed integer.

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Long

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Data Type used for saving memory in large array of floating numbers. Single Precision. 32-bit IEE.

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Float

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For Decimal Data Type, this is generally used. Double precision. 64-bit IEE.

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Double

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Data Type only has two (2) possible values.

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Boolean

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Data type used to store single character.

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Char

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A name for memory location that stores a specific value. An identifier.

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Variable

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A memory location whose values cannot be changed during program execution.

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Constant

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Converting value from a specific type to a variable of another type.

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Typecasting

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Conversion of a lower precision data type to a higher precision data type.

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Widening Conversion (Implicit Conversion)

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Conversion of a higher precision data type to a lower precision data type.

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Narrowing Conversion (Explicit Conversion)

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Specific symbols in a programming language.

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Operators

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Used to perform basic mathematical operations on numerical values.

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Arithmetic Operators

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A value used on either side of an operator

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Operand

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Occurs when both operands are integers

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Integer division

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Occurs when either or both operands are floating-point value and the result is a floating-point value.

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Floating-point division

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Return a Boolean value based on the Boolean result of the given expressions. Always evaluated from left to right.

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Logical Operators

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What are the different operators used in Logical Operators

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What are the different operators used in arithmetic operators

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Used to evaluate relation between the operands and generate a decision on that base.

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Relational Operators

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What are the different operators used in relational operators

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What are the different operators used in assignment operators.

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Used to assign values to a variable

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Assignment Operators

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Collection of rules that specifies which operations need to be performed in an expression

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Order of Precedence

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Precedence rules can be overriden by this

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Parantheses

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Order of Precedence of Operators

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Different Methods for Scanner

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Displays an output in a current line

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print()

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Insertion in the line after the output

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println()

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Used to create an output of specific format

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printf()

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Placeholder for a specific numeric value

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Format Specifier

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Examples of Format Specifier

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A class in java.util package

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Scanner