import java.util.*; class Box { int d; int w; int h; int c; public void Volume() { Scanner s = new Scanner(System.in); System.out.println(" Enter depth"); d=s.nextInt(); System.out.println("Enter widhth"); w=s.nextInt(); System.out.println("Enter height"); h=s.nextInt(); c=d*w*h; System.out.print("Volume of box :"+c); } public static void main(String ar[]) { int ch; Box o = new Box(); System.out.println("1. Voulume of box"); Scanner s3 = new Scanner(System.in); System.out.print("Enter ur choice"); ch = s3.nextInt(); switch(ch) { case 1: o.volume(); break; default: System.out.print(" Invalid choice"); break; } } }
Variables are items, which change their values during the execution of a program. Constants do not change the value during the execution of a program.
Yes. You can have as many variables as you want in Java
Constants, static variables and global variables are allocated in the program's data segment at compile time. Local variables are allocated on the stack at runtime. Variables cannot be allocated on the heap, you must use a constant, static variable, global variable or local variable to store the start address of a dynamic memory allocation. The variable must be a raw pointer or a reference handle (a smart pointer).
by the use of constructor . we can initialize the variables in java.The name of the constructor should be same as the name of the class .
Static member variables of a class are variables that are local to the class within which they are declared. That is, each instance of the class (each object) shares the same common member variable. Changing that variable's value in one instance will change it for all instances. Contrast with a non-static member variable where each instance of the class has its own independent variable, scoped to the object itself (not the class of object).
Yes, variables can be changed by assigning a new value to them. This allows us to update or modify the data stored in the variable as needed during the program execution.
In programming, you can change the value of a variable, which is essentially assigning a new value to the variable. The type of data a variable can hold is typically fixed after it's declared, but the actual value can be updated as needed during the program's execution.
Some languages - especially interpreted languages - let you create variables "on-the-fly". Just by assigning a value to the variable, the variable is created. This has both advantages and disadvantages. The advantage is that your program will be shorter. The disadvantage is that the program may become a bit disorganized: there is no guarantee that the variable will exist at a certain point, or that it will contain a certain data type.
Variables that are declared globally outside every program are called global variables.
A static variable is one which is not stored on the stack but in the memory of the program. Static variables can be changed.
Variables are items, which change their values during the execution of a program. Constants do not change the value during the execution of a program.
Yes. You can have as many variables as you want in Java
Create a static member variable to contain the count. This variable is common to all instances of the class.Initialize that variable to zero at the beginning of the program.In the class constructor, increment the variable.In the class destructor, decrement the variable.
Constants, static variables and global variables are allocated in the program's data segment at compile time. Local variables are allocated on the stack at runtime. Variables cannot be allocated on the heap, you must use a constant, static variable, global variable or local variable to store the start address of a dynamic memory allocation. The variable must be a raw pointer or a reference handle (a smart pointer).
by the use of constructor . we can initialize the variables in java.The name of the constructor should be same as the name of the class .
Variables are means for location in memory used by a program to store data. The size of that block depends upon the range over which the variable is allowed to vary. For example, on personal computer the size of an integer variable is two bytes, and that of a long integer is four bytes. A variable region is temporarily remember a number or string value, such as covered by the program. To identify the variables, you have a name unique to every single variable. This is called a variable name. Before using a variable, use variables to what is called a variable declaration that you have to reveal the names and data types that can be stored in the variable variable.
Scope of static variable is with in the file if it is static global. Scope of static variable is with in the function if variable is declared local to a function. But the life time is throughout the program