Value

A value is data and may be the result of evaluating an expression or the contents of a variable.

Related concepts:  ValueEvaluationVariable

Closest Wikipedia entry:  Value (computer science) — In computer science, a value is the representation of some entity that can be manipulated by a program. The members of a type are the values of that type.The "value of a variable" is given by the corresponding mapping in the environment. In languages with assignable variables it becomes necessary to distinguish between the r-value (or contents) and the l-value (or location) of a variable.In declarative (high-level) languages, values have to be referentially transparent.

Misconceptions about Value

19 documented Misconceptions

EqualityOperatorComparesObjectsValues

o==p compares the objects referred to by variables o and p

EqualsComparesReferences

o.equals(p) compares the references stored in the variables o and p

ExpressionsDynamicallyTyped

One has to evaluate an expression to determine its type

LocalVariablesAutoInitialized

Local variables are automatically initialized

MultiValueVariable

A variable can contain more than one value

MustInitializeFieldInConstructor

Constructors must assign values to all fields

NoCastIfSameSize

If a variable is at least as big (bit-width) as a value, then no cast is needed to a assign the value to the variable

NullIsObject

null is an object

PrimitiveIsObject

Primitive values are heap objects

PrimitiveVariablesDynamicallyTyped

The type of a primitive variable depends on its value

UseOfSelfTypeImpliesRecursiveType

If a class has a method that has a local variable, parameter, or return value with the class as its type, the class is a recursive type

VoidMethodReturnsValue

A method with void return type can return a value