Question # 1
Given:
What is the result?
| | A. 10 : 22 : 20
| | B. 10 : 22 : 22
| | C. 10 : 22 : 6
| | D. 10 : 30 : 6 |
Question # 2
Given the code format:
Which code fragment must be inserted at line 6 to enable the code to compile? | | A. DBConfiguration f;
return f;
| | B. Return DBConfiguration;
| | C. Return new DBConfiguration;
| | D. Retutn 0; |
B. Return DBConfiguration;
Question # 3
Given:
class Sum extends RecursiveAction { //line n1
static final int THRESHOLD_SIZE = 3;
int stIndex, lstIndex;
int [ ] data;
public Sum (int [ ]data, int start, int end) {
this.data = data;
this stIndex = start;
this. lstIndex = end;
}
protected void compute ( ) {
int sum = 0;
if (lstIndex – stIndex <= THRESHOLD_SIZE) {
for (int i = stIndex; i < lstIndex; i++) {
sum += data [i];
System.out.println(sum);
} else {
new Sum (data, stIndex + THRESHOLD_SIZE, lstIndex).fork( );
new Sum (data, stIndex,
Math.min (lstIndex, stIndex + THRESHOLD_SIZE)
).compute ();
}
}
}
and the code fragment:
ForkJoinPool fjPool = new ForkJoinPool ( );
int data [ ] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
fjPool.invoke (new Sum (data, 0, data.length));
and given that the sum of all integers from 1 to 10 is 55.
Which statement is true?
| | A. The program prints several values that total 55.
| | B. The program prints 55.
| | C. A compilation error occurs at line n1.
| | D. The program prints several values whose sum exceeds 55. |
C. A compilation error occurs at line n1.
Question # 4
Given:
public class Customer {
private String fName;
private String lName;
private static int count;
public customer (String first, String last) {fName = first, lName = last;
++count;}
static { count = 0; }
public static int getCount() {return count; }
}
public class App {
public static void main (String [] args) {
Customer c1 = new Customer(“Larry”, “Smith”);
Customer c2 = new Customer(“Pedro”, “Gonzales”);
Customer c3 = new Customer(“Penny”, “Jones”);
Customer c4 = new Customer(“Lars”, “Svenson”);
c4 = null;
c3 = c2;
System.out.println (Customer.getCount());
}
}
What is the result? | | A. 0
| | B. 2
| | C. 3
| | D. 4
| | E. 5 |
Question # 5
Given:
What is the result?
| | A. hEllOjAvA!
| | B. Hello java!
| | C. Out of limits
hEllOjAvA!
| | D. Out of limits |
C. Out of limits
hEllOjAvA!
Question # 6
Given the code fragment:
Map<Integer, String> books = new TreeMap<>();
books.put (1007, “A”);
books.put (1002, “C”);
books.put (1001, “B”);
books.put (1003, “B”);
System.out.println (books);
What is the result?
| | A. {1007 = A, 1002 = C, 1001 = B, 1003 = B}
| | B. {1001 = B, 1002 = C, 1003 = B, 1007 = A}
| | C. {1002 = C, 1003 = B, 1007 = A}
| | D. {1007 = A, 1001 = B, 1003 = B, 1002 = C} |
D. {1007 = A, 1001 = B, 1003 = B, 1002 = C}
Question # 7
Given the code fragment
Path path1 = Paths.get(“/app/./sys/”);
Path res1 = path1.resolve(“log”);
Path path2 = Paths.get(“/server/exe/”);
Path res1 = path1.resolve(“/readme/”);
System.out.println(res1);
System.out.println(res2);
What is the result?
| | A. /app/sys/log
/readme/server/exe
| | B. /app/log/sys
/server/exe/readme
| | C. /app/./sys/log
/readme
| | D. /app/./sys/log
/server/exe/readme |
D. /app/./sys/log
/server/exe/readme
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