Appelle méthode

public class Computer 
{ 
    public static int add (int a, int b) 
    { 
        return a + b; 
    } 
} 
public class SuperComputer extends Computer 
{ 
    public static int add (int a, int b) 
    { 
        return 0; 
    } 
} 
public class Test 
{ 
    public static void main (String[] args) 
    { 
        Computer pc = new SuperComputer(); 
        int sum = pc.add (9, 5); 
        System.out.println (sum); 
    } 
}