// *** instanceof keyword using
// *** Usage: reference instanceof ClassName
if(h instanceof Salary)
{
Salary s = (Salary) h;
s.computePay();
}
// *** Virtual Methods
public class Employee {
//....
public void mailCheck() {}
}
public class Salary extends Employee {
//....
@override
public void mailCheck() {}
}
public class SuperDemo {
public static void main(String[] args) {
//...
System.out.println("Instantiating a Salary");
Employee s = new Salary();
s.name = "XXX";
s.address = "";
System.out.println("*** Invoking mailCheck on s ***");
// compile time refers to Employee Class
// run time refers to Salary Class
s.mailCheck();
}
}
2012-02-26
Java - Compile Time & Run Time
Labels:
java
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