与えられた：
class FuelNotAvailException extends Exception { }
class Vehicle {
void ride() throws FuelNotAvailException {//line n1
System.out.println("Happy Journey!");
}
}
class SolarVehicle extends Vehicle {
public void ride () throws FuelNotAvailException {//line n2
super ride ();
}
}
そしてコードの断片：
public static void main (String[] args) throws Exception {
Vehicle v = new SolarVehicle ();
v.ride();
}
どの変更により、コードフラグメントはHappy Journey !?を出力できますか？

• A. Replace line n2 with private void ride() throws FuelNotAvailException {
• B. Replace line n1 with public void ride() throws FuelNotAvailException {
• C. Replace line n2 with void ride() throws Exception {
• D. Replace line n1 with protected void ride() throws Exception {

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

コードの断片を考えると：
List<String> colors = Arrays.asList("red", "green", "yellow");
Predicate<String> test = n - > {
System.out.println("Searching...");
return n.contains("red");
};
colors.stream()
.filter(c -> c.length() > 3)
.allMatch(test);
What is the result?

• A. Searching...
• B. A compilation error occurs.
• C. Searching...
  Searching...
  Searching...
• D. Searching...
  Searching...

コードの断片を考えると：
List<String> listVal = Arrays.asList("Joe", "Paul", "Alice", "Tom");
System.out.println (
// line n1
）;
lineに挿入されると、コードが長さが3を超える文字列要素の数を出力できるコードフラグメントはどれですか？

• A. listVal.stream（）。map（x-> x.length（）> 3）.count（）
• B. listVal.stream（）。filter（x-> x.length（）> 3）.count（）
• C. listVal.stream（）。peek（x-> x.length（）> 3）.count（）。get（）
• D. listVal.stream（）。filter（x-> x.length（）> 3）.mapToInt（x-> x）.count（）

コードの断片を考えると：
4. void doStuff() throws ArithmeticException, NumberFormatException,
Exception {
5. if (Math.random() >-1 throw new Exception ("Try again");
6. }
and
24. try {
25. doStuff ( ):
26. } catch (ArithmeticException | NumberFormatException | Exception e)
{
27. System.out.println (e.getMessage()); }
28. catch (Exception e) {
29. System.out.println (e.getMessage()); }
30. }
Which modification enables the code to print Try again?

• A. Replace line 26 with:
  } catch (Exception | ArithmeticException | NumberFormatException e) {
• B. Comment the lines 28, 29 and 30.
• C. Replace line 26 with:
  } catch (ArithmeticException | NumberFormatException e) {
• D. Replace line 27 with:
  throw e;