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Oracle Java SE 8 Programmer II Sample Questions (Q50-Q55):

NEW QUESTION # 50
Given:

Which option fails?

• A. Foo<String, Integer> mark = new Foo<String, Integer> ("Steve", 100);
• B. Foo<String, String> grade = new Foo <> ("John", "A");
• C. Foo<String, String> pair = Foo.<String>twice ("Hello World!");
• D. Foo<Object, Object> percentage = new Foo<String, Integer>("Steve", 100);

Answer: D

 

NEW QUESTION # 51
Given the records from the Employee table:

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
passWord exists.
What is the result?

• A. The Employee table is not updated and the program prints:
  112 Jerry
• B. The Employee table is updated with the row:
  112 Jack
  and the program prints:
  112 Jerry
• C. The program prints Exception is raised.
• D. The Employee table is updated with the row:
  112 Jack
  and the program prints:
  112 Jack

Answer: A

 

NEW QUESTION # 52
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. A compilation error occurs.
  Java EE
• B. Java ME
  [Java EE: Helen:Houston]
• C. [Java EE: Helen:Houston]
• D. [Java ME: Jessy:Chicago, Java ME: Mark:Chicago]
  [Java ME: Jessy:Chicago, Java ME: Mark:Chicago]

Answer: B

 

NEW QUESTION # 53
Given that data.txt and alldata.txt are accessible, and the code fragment:

What is required at line n1 to enable the code to overwrite alldata.txt with data.txt?

• A. bw.flush();
• B. br.close();
• C. bw.writeln();
• D. br.flush();

Answer: A

 

NEW QUESTION # 54
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. 4:00 - difference: 2
• C. 4:00 - difference: 3
• D. 3:00 - difference: 2

Answer: A

 

NEW QUESTION # 55
......

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