Some code formatting is required to understand this question
<span>Whatchamacallit {
private double price;
private String title;
public Whatchamacallit()
{
this (0, "none");
}
public Whatchamacallit(double p, String t)
{
price = 0;
if (p > 0)
{
price = p;
}
title = t;
}
public String toString()
{ return title + " costs $" + price; }
}
The following code segment appears in another class:
ArrayList list = new ArrayList();
list.add(new Whatchamacallit());
list.add(new Whatchamacallit(3.5, "book"));
list.add(new Whatchamacallit(-17, "CD"));
list.add(new Whatchamacallit(18.95, "sweater"));
list.add(new Whatchamacallit(5, "notebook"));
/* Missing Code */
Suppose the following line is used to replace /* Missing Code */. System.out.println(list.get(0));
The answer is 'none</span> costs $0'
This is because the line:
'System.out.println(list.get(0))'
gets the first item (index 0) in the array, which was :
'list.add(new Whatchamacallit()) '
and Whatchamacallit() sets price = 0 and title = 'none' in the class Whatchamacallit
The specific output of the 'get(0)' is because of the 'toString()' method in
Whatchamacallit
Answer: Scope resolution operator(::)
Explanation: A member function and the constructor can be called within the function easily but for the execution of the these components outside the class , a special operator is required to call the functions. The scope resolution operator(::) preceding with the name of class is thus used for defining of the function outside class.This operator maintains the cope of the function and constructor outside the class.
Answer:
what is this man. explain more
Answer: C) Prefetching
Explanation:
Cache prefetching is the technique in which the processor boots the performance of the execution by fetching the data from the actual storage information. It basically examine the hardware memory that basically access the patterns to fill cache with the data.
The computer processor, the prefetching of the data is required from the cache memory. Thus, the prefetching of the data and accessing it from the cache is generally increase the order of the magnitude rather than access it directly from the main memory.
And all the other options are incorrect as they do not involve in the cache fetching by the accessing the memory pattern.
Answer: C) Disassociation
Explanation:
Disassociation is the notification from which either a station or AP existing association are terminated. In dissociation, a station always give notifications before shutting down and leaving the extended service set (ESS) . In this, MAC layer management protect itself from the station which disappear without giving any notification.
This service basically used as distribution services, which basically helps in delivering the message or information within the service.
Therefore, option (C) is correct.