Java Variable Storage
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Each memory address corresponds to a single memory location, similar to a labelled filing cabinet for easy access to data. A variable is stored in RAM with a specific address, while a pointer is a special type of variable that holds the address of another variable. For example, a normal variable holds a value and has its own address, while a pointer has a separate address but points to the address of the variable it references.
Java Variable Storage
- 1. Each memory address corresponds to one memory location. The content of any location becomes known by its addressing. Compare it with a filing cabinet with many drawers (with labels for easy access.) Easy to find out the contents of the drawer by reading the label on the front of the drawer.
- 2. A variable is a piece of data kept in RAM The location of a variable in RAM is called the "address."
- 3. var X = 15 The memory address of X is not necessarily 1000000
- 4. Pointer is a memory location that stores the address of another memory location
- 5. Pointer is also a Variable Pointer is stored at location (0005) like other variables. The Pointer value (0001) is the address of some other Variable.
- 6. Normal Var can store values, Pointers are special variables that can hold the address of a variable ● A normal variable ‘var’has a memory address of 1001 and holds a value 50 ● A pointer variable has its own address 2047 but stores 1001, which is the address of the variable ‘var’