Answer:
See Explaination
Explanation:
public class testscope
{
//start of main function
public static void main(String[] args)
{
//varible declration
int i;
int x;
//loop for 10 times
for(i=0; i<10; i++)
{
//initialize value of x to 10
x = 10;
}
//the scope of variable x is visible outside of for loop
System.out.println("The value of x is: "+x);
}
}
See attachment for sample output
nb:
You can clearly see in the output of Java program the value of x is not printed and program return errors. It means the variable x declared inside for loop does not has scope outside the for loop.
Answer:
C. Because they want to effectively advertise to consumers.
Explanation:
Companies collect info for more accurate advertisements, which are designed to make people interact with them more commonly.
Answer:
Java program is explained below
Explanation:
import java.util.HashSet;
import java.util.Map;
import java.util.TreeMap;
public class TruckRace1 {
public static HashSet<String> getPIDs (Map<String,String>nameToPID ){
HashSet<String> pidSet = new HashSet<>();
for(String ids: nameToPID.values()){
pidSet.add(ids);
}
return pidSet;
}
public static void main(String[] args) {
Map<String,String> pids = new TreeMap<>();
pids.put("John","123");
pids.put("Jason","124");
pids.put("Peter","125");
pids.put("Alice","126");
pids.put("Peny","129");
HashSet<String> ids = getPIDs(pids);
for(String id:ids){
System.out.println(id);
}
}
}
Answer: Coaxial Cable got its name as "coaxial cable" as it has two physical layer of channel in same cable axis.
Explanation: Coaxial cable is the cable that is basically composed of copper and shield of other materials.They have two physical channels and having a insulating layer between them and the outer layer serving as the ground layer. Both the channel of physical layer have the same axis that why it is termed as "coaxial".These cables are commonly used in the cable televisions , sometimes in telephone line etc.
