global and static
No, a static variable means that there is only one copy of that variable, and it is shared by all members of the class, or by all callers of a function.A variable that is read-only would be marked as const or final (depending on language).
A private variable is one that is accessible only to the current class and cannot be accessed by any other class, including the ones that extend from it. A final variable is one that cannot be modified once it is initialized and assigned a value.
It's a global variable.
In programming languages, the keyword 'static' is significant because it is used to declare variables or functions that retain their values throughout the program's execution. This means that the variable or function is only initialized once and its value persists across different function calls or instances of the program. This can help improve memory efficiency and program performance.
Once the application is compiled, there is no need for an IDE.
A constant value.
A constant variable is a variable whose value is set once and cannot be changed throughout the program's execution. Once defined, the value of a constant variable remains constant and cannot be altered.
Declaring a variable with the final keyword makes it impossible to reassign a different value to that variable once it has been initialized with an explicit value (notice we said explicit rather than default). For primitives, this means that once the variable is assigned a value, the value can't be altered. For example, if you assign 10 to the int variable x, then x is going to stay 10, forever. That's pretty straightforward for primitives, but what does it mean to have a final object reference variable? A reference variable marked final can't ever be reassigned to refer to a different object. The data within the object can be modified, but the reference variable cannot be changed. In other words, if you have a final employee object variable, you can modify aspects of the employee but you cannot have the variable refer to say a manager.
In an experiment, your control variable will not be caused to vary by the experiment. Think of 'cause and effect'. The independent variable is the cause, the result is the effect, and the dependent variable is the one that you leave to be changed by the experiment.
A constant object is one that, once initialized, never changes value.
The "uno" keyword is used in programming languages like Java to declare a variable that can only be assigned a value once. This helps ensure that the variable's value remains constant throughout the program.
When data cannot be changed after a program is compiled, it is typically referred to as "immutable" data. This means that once the data is set, it cannot be altered, which helps to prevent unintended side effects and enhances program reliability. Immutable data structures are commonly used in functional programming languages and can also improve performance in concurrent programming by eliminating the need for locks. Examples include constants in programming languages and immutable collections.