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

Given:
class ImageScanner implements AutoCloseable {
public void close () throws Exception {
System.out.print ("Scanner closed.");
}
public void scanImage () throws Exception {
System.out.print ("Scan.");
throw new Exception("Unable to scan.");
}
}
class ImagePrinter implements AutoCloseable {
public void close () throws Exception {
System.out.print ("Printer closed.");
}
public void printImage () {System.out.print("Print."); }
}
and this code fragment:
try (ImageScanner ir = new ImageScanner();
ImagePrinter iw = new ImagePrinter()) {
ir.scanImage();
iw.printImage();
} catch (Exception e) {
System.out.print(e.getMessage());
}
結果は何ですか？

• A. Scan.Printer closed. Scanner closed. Unable to scan.
• B. Scan. Unable to scan.
• C. Scan.Scanner closed. Unable to scan.
• D. Scan. Unable to scan. Printer closed.

java.sql.Statementインターフェースには何が当てはまりますか？

• A. JDBCドライバーを使用してConnectionオブジェクトのインスタンスを取得するために使用されます。
• B. データベースとのセッションを提供します。
• C. 結果のデータを取得するカーソルを提供します。
• D. SQLステートメントを実行し、結果を返すためのクラスを提供します。

Given:
class Sum extends RecursiveAction { //line n1
static final int THRESHOLD_SIZE = 3;
int stIndex, lstIndex;
int [ ] data;
public Sum (int [ ]data, int start, int end) {
this.data = data;
this stIndex = start;
this. lstIndex = end;
}
protected void compute ( ) {
int sum = 0;
if (lstIndex ?stIndex<;= THRESHOLD_SIZE) {
for (int i = stIndex; i < lstIndex; i++) {
sum += data [i];
}
System.out.println(sum);
} else {
new Sum (data, stIndex + THRESHOLD_SIZE, lstIndex).fork( );
new Sum (data, stIndex,
Math.min (lstIndex, stIndex + THRESHOLD_SIZE)
).compute ();
}
}
}
and the code fragment:
ForkJoinPool fjPool = new ForkJoinPool ( );
int data [ ] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
fjPool.invoke (new Sum (data, 0, data.length));
and given that the sum of all integers from 1 to 10 is 55.
Which statement is true?

• A. A compilation error occurs at line n1.
• B. The program prints 55.
• C. The program prints several values that total 55.
• D. The program prints several values whose sum exceeds 55.

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;
}
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));
結果は何ですか？

• A. A compilation error occurs.
• 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. Java EE
  Java ME