CareerCup

The most specific function will be called to avoid an ambiguity. Since String and Object references can be both be null, the more specified class is preferred.

It prints string and object with the following code;
public class chckTheStuff {

static void callme(String s) {
System.out.println("string");
}

static void callme(Object s) {
System.out.println("Object");
}

public static void main(String[] args) {
Object ok = null;
callme(null);
callme(ok);
}
}