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NEW QUESTION # 62
Which two statements are true for a two-dimensional array of primitive data type?
- A. It cannot contain elements of different types.
- B. The length of each dimension must be the same.
- C. At the declaration time, the number of elements of the array in each dimension must be specified.
- D. All methods of the class object may be invoked on the two-dimensional array.
Answer: C,D
NEW QUESTION # 63
Given the code fragment:
Which two code fragments, when inserted at line n1 independently, result in the output PEEK: Unix?
- A. .noneMatch ();
- B. .allMatch ();
- C. .anyMatch ();
- D. .findAny ();
- E. .findFirst ();
Answer: E
NEW QUESTION # 64
Given:
and the code fragment:
What is the result?
- A. 0
- B. 1
- C. A compilation error occurs at line n1.
- D. An Exception is thrown at run time.
Answer: C
NEW QUESTION # 65
Given the code fragment:
Which two modifications, when made independently, enable the code to print Joe:true:100.0?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
- E. Option E
Answer: A,D
Explanation:
A is wrong because "Cannot use this. in a static context"
B is wrong because true is written in capital letters
E is wrong because "The constructor Employee(String, boolean, int) is undefined", there should be a parameterized constructor for class Employee
NEW QUESTION # 66
Given:
class Book {
int id;
String name;
public Book (int id, String name) {
this.id = id;
this.name = name;
}
public boolean equals (Object obj) { //line n1
boolean output = false;
Book b = (Book) obj;
if (this.name.equals(b name))}
output = true;
}
return output;
}
}
and the code fragment:
Book b1 = new Book (101, "Java Programing");
Book b2 = new Book (102, "Java Programing");
System.out.println (b1.equals(b2)); //line n2
Which statement is true?
- A. The program prints false.
- B. A compilation error occurs. To ensure successful compilation, replace line n2 with:System.out.println (b1.equals((Object) b2));
- C. The program prints true.
- D. A compilation error occurs. To ensure successful compilation, replace line n1 with:boolean equals (Book obj) {
Answer: C
NEW QUESTION # 67
Given the code fragment:
public static void main (String [ ] args) throws IOException {
BufferedReader br = new BufferedReader (new InputStremReader
(System.in));
System.out.print ("Enter GDP: ");
//line 1
}
Which code fragment, when inserted at line 1, enables the code to read the GDP from the user?
- A. int GDP = br.nextInt();
- B. int GDP = Integer.parseInt (br.readline());
- C. int GDP = Integer.parseInt (br.next());
- D. int GDP = br.read();
Answer: B
NEW QUESTION # 68
Given the code fragment:
What is the result?
Word: why what when
- A.
- B. Word: why Word: what Word: when
- C. Word: why Word: why what Word: why what when
- D. Compilation fails at line n1.
Answer: C
Explanation:
Explanation
NEW QUESTION # 69
Given:
Your design requires that:
fuelLevel of Engine must be greater than zero when the start()method is invoked.
The code must terminate if fuelLevelof Engineis less than or equal to zero.
Which code fragment should be added at line n1to express this invariant condition?
- A. assert fuelLevel < 0: System.exit(0);
- B. assert (fuelLevel) : "Terminating...";
- C. assert fuelLevel > 0: "Impossible fuel" ;
- D. assert (fuelLevel > 0) : System.out.println ("Impossible fuel");
Answer: A
NEW QUESTION # 70
Given:
and the code fragment:
What is the result?
- A. falsetrue
- B. truetrue
- C. truefalse
- D. falsefalse
Answer: C
NEW QUESTION # 71
Given the code fragment:
Which should be inserted into line n1to print Average = 2.5?
- A. Stream str = Stream.of (1, 2, 3, 4);
- B. IntStream str = IntStream.of (1, 2, 3, 4);
- C. DoubleStream str = Stream.of (1.0, 2.0, 3.0, 4.0);
- D. IntStream str = Stream.of (1, 2, 3, 4);
Answer: C
NEW QUESTION # 72
Given:
Item table
* ID, INTEGER: PK
* DESCRIP, VARCHAR(100)
* PRICE, REAL
* QUANTITY< INTEGER
And given the code fragment:
9 . try {
1 0. Connection conn = DriveManager.getConnection(dbURL, username, password);
1 1. String query = "Select * FROM Item WHERE ID = 110";
1 2. Statement stmt = conn.createStatement();
1 3. ResultSet rs = stmt.executeQuery(query);
1 4. while(rs.next()) {
1 5. System.out.println("ID: " + rs.getInt("Id"));
1 6. System.out.println("Description: " + rs.getString("Descrip"));
1 7. System.out.println("Price: " + rs.getDouble("Price"));
1 8. System.out.println(Quantity: " + rs.getInt("Quantity"));
1 9. }
2 0. } catch (SQLException se) {
2 1. System.out.println("Error");
2 2. }
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the dbURL, userName, and passWordexists.
The SQL query is valid.
What is the result?
- A. The code prints information about Item 110.
- B. The code prints Error.
- C. Compilation fails.
- D. An exception is thrown at runtime.
Answer: B
NEW QUESTION # 73
Given:
and the code fragment:
Which two code fragments, when inserted at line n1 independently, enable the code to print TruckCarBike?
- A. .sorted((v1, v2) -> Integer.compare(v1.getVId(), v2.getVid()))
- B. .sorted(Comparator.comparing ((Vehicle v) -> v.getVId()))
- C. .map (v -> v.getVid()).sorted ()
- D. .sorted ((v1, v2) -> v1.getVId() < v2.getVId())
- E. .sorted (Comparable.comparing (Vehicle: :getVName)).reversed ()
Answer: A,B
NEW QUESTION # 74
Given the code fragment:
What is the result?
- A. Word: why Word: what Word: when
- B. Word: why what when
- C. Word: why Word: why what Word: why what when
- D. Compilation fails at line n1.
Answer: B
NEW QUESTION # 75
Given:
Which is refactored code with functional interfaces?
- A.
- B.
- C.
- D.
Answer: D
NEW QUESTION # 76
Given the code fragments:
What is the result?
- A. Compilation fails at line n1
- B. Compilation fails at line n2
- C. Contract Contract Super
- D. Super Sub Sub
Answer: B
NEW QUESTION # 77
Given the code fragment:
Path source = Paths.get ("/data/december/log.txt");
Path destination = Paths.get("/data");
Files.copy (source, destination);
and assuming that the file /data/december/log.txt is accessible and contains:
10-Dec-2014 - Executed successfully
What is the result?
- A. A FileNotFoundException is thrown at run time.
- B. A FileAlreadyExistsException is thrown at run time.
- C. The program executes successfully and does NOT change the file system.
- D. A file with the name log.txt is created in the /data directory and the content of the /data/december/log.txt
file is copied to it.
Answer: B
NEW QUESTION # 78
Given the Greetings.propertiesfile, containing:
and given:
What is the result?
- A. Hello, everyone!
- B. Goodbye everyone!
- C. Compilation fails.
- D. GOODBY_MSG
- E. HELLO_MSG
Answer: C
NEW QUESTION # 79
Given:
What is the result?
- A. Baz Hello
- B. A compilation error occurs in the Daze class.
- C. Bar HelloBaz Hello
- D. Bar HelloFoo Hello
Answer: C
NEW QUESTION # 80
Assume customers.txtis accessible and contains multiple lines.
Which code fragment prints the contents of the customers.txtfile?
Stream<String> stream = Files.find (Paths.get (“customers.txt”));
- A. lines.forEach( c) -> System.out.println(c));
- B. stream.forEach( c) -> System.out.println(c));
Stream<String> lines = Files.lines (Paths.get (“customers.txt”)); - C. stream.forEach( c) -> System.out.println(c));
Stream<Path> stream = Files.list (Paths.get (“customers.txt”)); - D. stream.forEach((String c) -> System.out.println(c));
Stream<Path> stream = Files.find (Paths.get (“customers.txt”));
Answer: D
NEW QUESTION # 81
Given the records from the Employeetable:
and given the code fragment:
try {
Connection conn = DriverManager.getConnection (URL, userName, passWord); Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
st.execute("SELECT*FROM Employee");
ResultSet rs = st.getResultSet();
while (rs.next()) {
if (rs.getInt(1) ==112) {
rs.updateString(2, "Jack");
}
}
rs.absolute(2);
System.out.println(rs.getInt(1) + " " + rs.getString(2));
} catch (SQLException ex) {
System.out.println("Exception is raised");
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database accessible with the URL, userName, and passWordexists.
What is the result?
- A. The Employee table is updated with the row:
1 12 Jack
and the program prints:
1 12 Jack - B. The program prints Exception is raised.
- C. The Employee table is not updated and the program prints:
1 12 Jerry - D. The Employee table is updated with the row:
1 12 Jack
and the program prints:
1 12 Jerry
Answer: B
NEW QUESTION # 82
Given:
public class Test<T> {
private T t;
public T get () {
return t;
}
public void set (T t) {
this.t = t;
}
public static void main (String args [ ] ) {
Test<String> type = new Test<>();
Test type 1 = new Test (); //line n1
type.set("Java");
type1.set(100); //line n2
System.out.print(type.get() + " " + type1.get());
}
}
What is the result?
- A. java.lang.string@<hashcode>java.lang.Integer@<hashcode>
- B. Java 100
- C. A compilation error occurs. To rectify it, replace line n2with:
type1.set (Integer(100)); - D. A compilation error occurs. To rectify it, replace line n1with:
Test<Integer> type1 = new Test<>();
Answer: D
NEW QUESTION # 83
Given:
public interface Moveable<Integer> {
public default void walk (Integer distance) {System.out.println("Walking");)
public void run(Integer distance);
}
Which statement is true?
- A. Moveable can be used as below:Moveable<Integer> animal = n - > n +
10;animal.run(100);animal.walk(20); - B. Movable cannot be used in a lambda expression.
- C. Moveable can be used as below:Moveable animal = (Integer n) - >
System.out.println(n);animal.run(100);Moveable.walk(20); - D. Moveable can be used as below:Moveable<Integer> animal = n - > System.out.println("Running" +
n);animal.run(100);animal.walk(20);
Answer: D
NEW QUESTION # 84
Given:
class Student {
String course, name, city;
public Student (String name, String course, String city) {
this.course = course; this.name = name; this.city = city;
}
public String toString() {
return course + ":" + name + ":" + city;
}
public String getCourse() {return course;}
public String getName() {return name;}
public String getCity() {return city;}
and the code fragment:
List<Student> stds = Arrays.asList(
new Student ("Jessy", "Java ME", "Chicago"),
new Student ("Helen", "Java EE", "Houston"),
new Student ("Mark", "Java ME", "Chicago"));
stds.stream()
. collect(Collectors.groupingBy(Student::getCourse))
. forEach(src, res) -> System.out.println(scr));
What is the result?
- A. [Java EE: Helen:Houston]
[Java ME: Jessy:Chicago, Java ME: Mark:Chicago] - B. A compilation error occurs.
- C. Java EE
Java ME - D. [Java ME: Jessy:Chicago, Java ME: Mark:Chicago]
[ Java EE: Helen:Houston]
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION # 85
......
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