Implicit Parameter
The implicit parameter of a method is the object on which the method is invoked
{
balance = balance + amount;
}In the call
momsSavings.deposit(500)
The implicit parameter is momsSavings and the explicit parameter is 500
When you refer to an instance variable inside a method, it means the instance variable of the implicit parameter
A method call without an implicit parameter is applied to the same object
Example:
public class BankAccount
{
. . .
public void monthlyFee()
{
withdraw(10); // Withdraw $10 from this account
}
}The implicit parameter of the withdraw method is the (invisible) implicit parameter of the monthlyFee method
You can use the this reference to make the method easier to read
public class BankAccount
{
. . .
public void monthlyFee()
{
this.withdraw(10); // Withdraw $10 from this account
}
}