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NEW QUESTION # 69
Which statement is true about the single abstract method of the java.util.function.Function interface?
- A. It accepts one argument and returns boolean.
- B. It accepts an argument and produces a result of any data type.
- C. It accepts one argument and always produces a result of the same type as the argument.
- D. It accepts one argument and returns void.
Answer: B
Explanation:
http://winterbe.com/posts/2014/03/16/java-8-tutorial/ (functions)
NEW QUESTION # 70
For which three objects must a vendor provide implementations in its JDBC driver? (Choose three.)
- A. SQLException
- B. ResultSet
- C. Time
- D. DriverManager
- E. Connection
- F. Statement
- G. Date
Answer: B,E,F
Explanation:
Explanation
Database vendors support JDBC through the JDBC driver interface or through the ODBC connection. Each driver must provide implementations of java.sql.Connection, java.sql.Statement, java.sql.PreparedStatement, java.sql.CallableStatement, and java.sql.Re sultSet. They must also implement the java.sql.Driver interface for use by the generic java.sql.DriverManager interface.
NEW QUESTION # 71
Given the code fragments :
and
What is the result?
- A. TV Price :1000 Refrigerator Price :2000
- B. The program prints nothing.
- C. A compilation error occurs.
- D. TV Price :110 Refrigerator Price :2100
Answer: D
NEW QUESTION # 72
Given the code fragments:
and
What is the result?
- A. [Dog, Cat, Mouse]
- B. A compilation error occurs.
- C. DogCatMouse
- D. null
Answer: A
NEW QUESTION # 73
Given:
and the code fragment:
What is the result?
- A. 0.0
- B. A compilation error occurs.
- C. 1500.0
- D. 2000.0
Answer: D
NEW QUESTION # 74
Given the code fragment:
What is the result?
- A. [Java, J2EE, J2ME, JSTL, JSP]
- B. A compilation error occurs.
- C. null
- D. [Java, J2EE, J2ME, JSTL]
Answer: B
NEW QUESTION # 75
Given the following array:
Which two code fragments, independently, print each element in this array?
- A. Option A
- B. Option D
- C. Option F
- D. Option C
- E. Option E
- F. Option B
Answer: A,E
NEW QUESTION # 76
Which two statements are true for a two-dimensional array of primitive data type?
- A. At the declaration time, the number of elements of the array in each dimension must be specified.
- B. The length of each dimension must be the same.
- C. It cannot contain elements of different types.
- D. All methods of the class object may be invoked on the two-dimensional array.
Answer: C,D
NEW QUESTION # 77
Given the code fragment:
What is the result?
- A. Checking...
- B. A compilation error occurs at line n1.
- C. Checking...
Checking... - D. A compilation error occurs at line n2.
Answer: B
NEW QUESTION # 78
In 2015, daylight saving time in New York, USA, begins on March 8th at 2:00 AM. As a result,
2:00 AM becomes 3:00 AM.
Given the code fragment:
Which is the result?
- A. 2:00 - difference: 1
- B. 3:00 - difference: 2
- C. 4:00 - difference: 2
- D. 4:00 - difference: 3
Answer: C
NEW QUESTION # 79
Given the structure of the Student table:
Student (id INTEGER, name VARCHAR)
Given the records from the STUDENT table:
Given the code fragment:
Assume that:
What is the result?
- A. A SQLException is thrown at runtime.
- B. The program prints Status: false but the records from the Student table are not deleted.
- C. The program prints Status: false and two records are deleted from the Student table.
- D. The program prints Status: true and two records are deleted from the Student table.
Answer: C
NEW QUESTION # 80
Given this code;
Which two are correct after this class is instantiated and tested?
- A. If the value of j is set to 15, the value of i could be any integer value.
- B. If the value of i is set to 6, the value of j will be 18.
- C. If the value of i is set to 8, the value of j could be any integer value.
- D. If the value of i remains 3, the value of j will remain 9.
- E. If the value of j is set to 5, the value of i will be 15.
- F. If the value of i is set to 5, the value of j will be 1.
Answer: E,F
NEW QUESTION # 81
Given the code fragment:
Stream<Path> files = Files.walk(Paths.get(System.getProperty("user.home"))); files.forEach (fName -> {//line n1 try { Path aPath = fName.toAbsolutePath();//line n2 System.out.println(fName + ":"
+ Files.readAttributes(aPath, Basic.File.Attributes.class).creationTime ());
} catch (IOException ex) {
ex.printStackTrace();
});
What is the result?
- A. A compilation error occurs at line n1.
- B. All files and directories under the home directory are listed along with their attributes.
- C. The files in the home directory are listed along with their attributes.
- D. A compilation error occurs at line n2.
Answer: B
NEW QUESTION # 82
Given:
and
Which interface from the java.util.functionpackage should you use to refactor the class Txt?
- A. Function
- B. Consumer
- C. Predicate
- D. Supplier
Answer: D
Explanation:
Explanation/Reference:
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/function/package-summary.html
NEW QUESTION # 83
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. The program executes successfully and does NOT change the file system.
- B. A FileNotFoundException is thrown at run time.
- C. A FileAlreadyExistsException is thrown at run time.
- 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: C
NEW QUESTION # 84
Given the code fragment:
What is the result?
- A. 10 : 10
- B. Compilation fails.
- C. 5 : 5
- D. 5 : 10
Answer: A
NEW QUESTION # 85
Given:
- A. ns = 50 S = 50
ns = 125 S = 125
ns = 100 S = 100 - B. ns = 50 S = 125
ns = 125 S = 125
ns = 0 S = 125 - C. ns = 50 S = 50
ns = 125 S = 125
ns = 0 S = 125 - D. ns = 50 S = 125
ns = 125 S = 125
ns = 100 S = 125
Answer: B
NEW QUESTION # 86
Given the code fragment:
List<Integer> codes = Arrays.asList (10, 20);
UnaryOperator<Double> uo = s -> s +10.0;
codes.replaceAll(uo);
codes.forEach(c -> System.out.println(c));
What is the result?
- A. A NumberFormatException is thrown at run time.
- B. 10
20 - C. A compilation error occurs.
- D. 20.0
30.0
Answer: D
NEW QUESTION # 87
Given:
interface Doable {
public void doSomething (String s);
}
Which two class definitions compile? (Choose two.)
- A. public class Action implements Doable {public void doSomething(Integer i) { }public String
doThis(Integer j) { }} - B. public abstract class Work implements Doable {public abstract void doSomething(String s) { }public
void doYourThing(Boolean b) { }} - C. public class Job implements Doable {public void doSomething(Integer i) { }}
- D. public abstract class Task implements Doable {public void doSomethingElse(String s) { }}
- E. public class Do implements Doable {public void doSomething(Integer i) { }public void
doSomething(String s) { }public void doThat (String s) { }}
Answer: D,E
NEW QUESTION # 88
Given that version.txt is accessible and contains:
1234567890
and given the code fragment:
What is the result?
- A. The program prints nothing.
- B. 0
- C. 1
- D. 2
Answer: C
NEW QUESTION # 89
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?
Java 100
- A. java.lang.string@<hashcode>java.lang.Integer@<hashcode>
- B.
- 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: B
NEW QUESTION # 90
Given the code fragment:
What is the result?
- A. A B C D Work done
- B. A B C Work done
- C. Compilation fails.
- D. A Work done
Answer: D
NEW QUESTION # 91
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