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Oracle Java SE 8 Programmer II Sample Questions (Q135-Q140):

NEW QUESTION # 135
Given the code fragments:

and

Which two modifications enable to sort the elements of the empslist? (Choose two.)

A. Replace line n1 with
class Person extends Comparator<Person>
B. At line n2 insert
public int compareTo (Person p) {
return this.name.compareTo (p.name);
}
C. Replace line n1 with
class Person implements Comparable<Person>
D. At line n2 insert
public int compare (Person p1, Person p2) {
return p1.name.compareTo (p2.name);
}
E. At line n2 insert:
public int compareTo (Person p, Person p2) {
return p1.name.compareTo (p2.name);
}
F. Replace line n1 with
class Person implements Comparator<Person>

Answer: B,C

NEW QUESTION # 136
Given the definition of the Emp class:
public class Emp
private String eName;
private Integer eAge;
Emp(String eN, Integer eA) {
this.eName = eN;
this.eAge = eA;
}
public Integer getEAge () {return eAge;}
public String getEName () {return eName;}
}
and code fragment:
List<Emp>li = Arrays.asList(new Emp("Sam", 20), New Emp("John", 60), New Emp ("Jim", 51)); Predicate<Emp> agVal = s -> s.getEAge() > 50; //line n1 li = li.stream().filter(agVal).collect(Collectors.toList()); Stream<String> names = li.stream()map.(Emp::getEName); //line n2 names.forEach(n -> System.out.print(n + " ")); What is the result?

A. John Jim
B. Sam John Jim
C. A compilation error occurs at line n2.
D. A compilation error occurs at line n1.

Answer: A

NEW QUESTION # 137
For which three objects must a vendor provide implementations in its JDBC driver?

A. SQLException
B. Time
C. ResultSet
D. Connection
E. Statement
F. DriverManager
G. Date

Answer: C,D,E

Explanation:
Explanation/Reference:
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 # 138
Given the EMPLOYEE table;

Given the code fragment:

Assuming the database supports scrolling and updating, what is the result?

A. A new record is inserted and Employee Id: 104, Employee Name: Michael is displayed.
B. A compilation error occurs.
C. A new record is inserted and Employee Id: 102, Employee Name: Peter is displayed.
D. The program throws a runtime exception at Line 1.

Answer: C

NEW QUESTION # 139
Given the code fragment:
public class FileThread implements Runnable {
String fName;
public FileThread(String fName) { this.fName = fName; }
public void run () System.out.println(fName);}
public static void main (String[] args) throws IOException, InterruptedException { ExecutorService executor = Executors.newCachedThreadPool(); Stream<Path> listOfFiles = Files.walk(Paths.get("Java Projects")); listOfFiles.forEach(line -> { executor.execute(new FileThread(line.getFileName().toString())); // line n1
});
executor.shutdown();
executor.awaitTermination(5, TimeUnit.DAYS);//
line n2
}
}
The Java Projects directory exists and contains a list of files.
What is the result?

A. The program prints files names concurrently.
B. The program prints files names sequentially.
C. The program throws a runtime exception at line n2.
D. A compilation error occurs at line n1.

Answer: A

NEW QUESTION # 140
......

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