Given the definition of the Vehicle class:
Class Vehhicle {
int distance;//line n1
Vehicle (int x) {
this distance = x;
}
public void increSpeed(int time) {//line n2
int timeTravel = time;//line n3
class Car {
int value = 0;
public void speed () {
value = distance /timeTravel;
System.out.println (“Velocity with new speed”+value+”kmph”);
}
}
new Car().speed();
}
}
and this code fragment:
Vehicle v = new Vehicle (100);
v.increSpeed(60);
What is the result?
Question No 2
Given:
IntStream stream = IntStream.of (1,2,3);
IntFunction<Integer> inFu= x - > y - > x*y;//line n1
IntStream newStream = stream.map(inFu.apply(10));//line n2
newStream.forEach(System.out::print);
Which modification enables the code fragment to compile?
Question No 3
Given the code fragment:
List<Integer> values = Arrays.asList (1, 2, 3);
values.stream ()
.map(n - > n*2)//line n1
.peek(System.out::print)//line n2
.count();
What is the result?
Question No 4
Given the code fragment:
public class Foo {
public static void main (String [ ] args) {
Map<Integer, String> unsortMap = new HashMap< > ( );
unsortMap.put (10, “z”);
unsortMap.put (5, “b”);
unsortMap.put (1, “d”);
unsortMap.put (7, “e”);
unsortMap.put (50, “j”);
Map<Integer, String> treeMap = new TreeMap <Integer, String> (new
Comparator<Integer> ( ) {
@Override public int compare (Integer o1, Integer o2) {return o2.compareTo
(o1); } } );
treeMap.putAll (unsortMap);
for (Map.Entry<Integer, String> entry : treeMap.entrySet () ) {
System.out.print (entry.getValue () + “ “);
}
}
}
What is the result?
Question No 5
Which two reasons should you use interfaces instead of abstract classes? (Choose two.)