Variable Shadowing

Variable shadowing occurs when a local variable (inside a method, constructor, or block) has the same name and type as an instance variable (declared at the class level). In this case, the local variable takes precedence within its scope. However, you can still access the instance variable using the this keyword.

Syntax to access instance var in local scope: this.variablename

Example

class Employee{

double salary=150000.0; // instance var declared in global scope

public void info()

{

//local variable declared in local scope

double salary = 40000.0;

System.out.println(salary); // it prints 40000.0

double temp = this.salary;

System.out.println(temp); // it prints 150000.0

}

public static void main(String[] a)

{

Employee e =new Employee();

e.info();

}

}