Description Manoj K. Gupta 2004-02-04 10:39:28 EST

Conside the following code snippets:
Account.java:
public class Account{
private int balance=0;
	public void credit(int amount){
		balance=balance +amount;
		System.out.println("amount credited");
	}
}

SavingsAccount.java:
public class SavingsAccount extends Account{
	public void credit(int amount){
		super.credit(amount);		
	}
	public static void main(String args[]){
		SavingsAccount sa = new SavingsAccount();
		sa.credit(5);
	}
}

AspectLoging.java:
import Account;

public aspect AspectLogging {
pointcut credit(): call(void Account.credit(int));
	before(): credit() {
		System.out.println("check balance");
	}
}

After compiling these classes using ajc on command line, before advice gets 
weaved around the method call "sa.credit(5) in SavingsAccount.java, while no 
advice is weaved before call to super.credit(amount). Here is how code looks 
after de-compilation of SavingsAccount.class

public class SavingsAccount extends Account
{

    public SavingsAccount()
    {
    }

    public void credit(int amount)
    {
        super.credit(amount);
    }

    public static void main(String args[])
    {
        SavingsAccount sa = new SavingsAccount();
        AspectLogging.aspectOf().ajc$before$AspectLogging$6b();
        sa.credit(5);
    }
}