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Constant in Java refers to a fixed value that doesn’t change during the execution of a program. The value of constants appears right in a program. It is also known as Literals. We use the constants to create values that assign to variables. Constants can make our program easy to read and understood by others.
Java does not directly support the constant. To define a variable as a constant, We use the “Static” and “Final” Keywords before declaring a variable.
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Shikha Sharma
Dahlia Hagenes
Wiki User
∙ 13y agoIn java, the final keyword is used to mark a variable as unchangeable.
Wiki User
∙ 11y agoThe const keyword denotes a constant.
Wiki User
∙ 11y agoThe const keyword declares any named value to be a constant.
Wiki User
∙ 11y agonamedConstant
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Which is the keyword used to limit the scope of a function to the file in which it resides?
Declare the function static.
What is the keyword used to declare a class which cannot be instantiated?
abstract all lower case.
The Java keyword is used to declare a class as a subclass of another class?
class MyClass extends AnotherClass {}
Which keyword is used to declare constants and variable?
Constants are defines using the final keyword.Variables are defined using the one of the keywords:charbooleanintdoublelongintStringTo use a constant you would have to put in something likedouble final pi = 3.14;
Is it possible to declare a keyword as an identifier in c plus plus?
No. Keywords are reserved and cannot be used as identifiers. However, C/C++ is case-sensitive. So although register is a reserved keyword, Register is not.
Which is the keyword used to limit the scope of a function to the file in which it resides?
Declare the function static.
Which is the keyword used to limit the scope of the function to the file in which it is reside?
Declare the function static.
What is the keyword used to declare a class which cannot be instantiated?
abstract all lower case.
The Java keyword is used to declare a class as a subclass of another class?
class MyClass extends AnotherClass {}
Which keyword is used to declare constants and variable?
Constants are defines using the final keyword.Variables are defined using the one of the keywords:charbooleanintdoublelongintStringTo use a constant you would have to put in something likedouble final pi = 3.14;
Is it possible to declare a keyword as an identifier in c plus plus?
No. Keywords are reserved and cannot be used as identifiers. However, C/C++ is case-sensitive. So although register is a reserved keyword, Register is not.
How would you declare a constant of 5 called MYCONST?
A constant of 5 called MYCONST would be declared as #define MYCONST 5. This is because the statement used is a define statement.
Is in is used as a keyword in C language?
Neither "in" nor "is" is a keyword in C.
Which access specifier is preferred for constant variables?
There's no such thing as a constant variable (other than as an oxymoron). A named value is either declared constant or it is declared variable, it cannot be both a constant and a variable.You declare a constant much as you would a variable, except you use the final keyword modifier and name the constant using ALL CAPS and underscores for spaces.final int HOURS_IN_DAY = 24;final int DAYS_IN_WEEK;DAYS_IN_WEEK = 7;Note that we don't need to assign a constant value at the point of instantiation. However, once assigned we cannot then change the value. It wouldn't be a constant if we could!The preferred access specifier depends on how useful the constant is. If only one method makes use of the constant, then it should simply be declared within that method as a local constant. If several methods of the same class make use of the constant then declare it a private member of the class. Both methods are used in the following example:public class MyClass {private static int HOURS_IN_DAY = 24;public int hoursInDays (int days) {return days * HOURS_IN_DAY;}public int hoursInWeeks (int weeks) {final int DAYS_IN_WEEK = 7;return weeks * DAYS_IN_WEEK * HOURS_IN_DAY;}}Note the use of the static keyword in the constant declaration. It doesn't make sense for every object of a class to store independent copies of the same constant value, thus we must declare class constants as static members so that all objects of the class can share the same instance of the constant and thus share the same value.If we want the constant to be accessible to our subclasses, then we can declare the constant protected. If we want to make the constant available outside of the class then we can declare it public.Keep in mind that although constants are not variable, we should only expose what needs to be exposed outside of a class, no more and no less. A constant that provides a class implementation detail has no business being accessible outside of the class in which it is declared.You should also be aware that the rules governing constants are different for primitive data types and objects. With primitive data types, the value is constant as one would expect. But with objects, only the reference is constant (we cannot refer to a different object) but if the referenced object allows mutations then it is not truly constant. Unfortunately, the only way to create a truly constant object from a mutable class is to subclass the mutable class and render its setters private.
Which keyword is used to declare a class?
There is no keyword for it. You can use a variable of 1 class in another only id the other class is derived from the 1st class.Although you can use the variable of an object of a class in another class using object.variable
What is typdef in c?
It is a keyword generally used to rename data types, using typedef you can create alias which can be used to declare the variable. e.g. typedef struct node { int info; struct node *next; }Node; now to declare variable of struct node type we can use the word Node in place of struct node
What is a keyword marketing tool used for?
A keyword marketing tool is used to increase organic traffic by focusing on the most promising keywords. The more a keyword is used by searchers and websites the more attraction it receives.
