接口的应用

interface ClassName{
public String getClassName();
}
class Company implements ClassName{
public String getClassName(){
return "Company";
}
}
public class per02 {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ClassName name =new Company();
System.out.print(name.getClassName());
}
}