Oracle 1Z0-805日本語 問題集

質問 1：

log - Jan2009
log_01_2010
log_Feb2010
log_Feb2011
log-sum-2012

PathMatcher matcher = FileSystems.getDefault ().getPathMatcher ("glob:???_*1");
A. 2
B. 3
C. 4
D. 6
E. 1
F. 5
正解：E
解説: (Topexam メンバーにのみ表示されます)

質問 2：

A. Option A
B. Option C
C. Option D
D. Option B
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 3：

class Fibonacci extends RecursiveTask<Integer> {
final int n;
Fibonacci (int n) { this.n = n }
Integer compute () {
if (n <= 1)
return n;
Fibonacci f1 = new Fibonacci (n - 1);
f1.fork;
Fibonacci f2 = new Fibonacci (n - 2);
return f2.compute() + f1.join; // Line **
}
}
Assume that line ** is replaced with:
return f1.join() + f2.compute(); // Line **

A. Option E
B. Option A
C. Option C
D. Option D
E. Option B
F. Option F
正解：E
解説: (Topexam メンバーにのみ表示されます)

質問 4：

try {
String query = "SELECT * FROM Item";
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(query);
ResultSetMetaData rsmd = rs.getMetaData();
int rowCount = rsmd.getRowCount();
System.out.println ("Processing: " + rowCount + " rows.");
while (rs.next()) {
// Process each row
}
} catch (SQLException se) {
System.out.println("Error");
}

A. Option A
B. Option C
C. Option D
D. Option B
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 5：

A. int i = new Random (). nextInt (100)+1;
B. int i = (int) Math.random()*.nextInt(1, 101);
C. int i = ThreadLocalRandom.current().nextInt (1, 101);
D. int i = ThreadSaferandom.current().nextInt(1, 101);
E. int i = (int) Match.random (1, 101);
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 6：

public class MyGrades {
private final List<Integer> myGrades = new ArrayList<Integer>();
private final ReadWriteLock rwlock = new ReentrantReadWriteLock();
public void addGrade(Integer grade) {
// acquire _______ lock
myGrades.add(grade);
// release __________ lock
}
public void averageGrades() {
// acquire _______ lock Line ** double sum = 0;
int i = 0;
for (i = 0; i < myGrades.size(); i++) {
sum += myGrades.get(i);
}
// release __________ lock Line ***
System.out.println("The average is: " + sum/(i+1));
}
}

A. relock.WriteLock().acquire(); rwlock.writeLock().release();
B. rwlock.writeLock().lock(); rwlock.WriteLock().unlock();
C. rwlock.getLock().acquire(); rwlock.getLock().release();
D. rwlock.readLock().acquire(); rwlock.readLock().release();
E. rwlock.readLock().lock(); rwlock.readLock().unlock();
F. rwlock.getLock().lock(); rwlock.getLock().Unlock();
正解：E
解説: (Topexam メンバーにのみ表示されます)

質問 7：



A. Option E
B. Option A
C. Option C
D. Option D
E. Option B
F. Option F
正解：C,D
解説: (Topexam メンバーにのみ表示されます)

質問 8：

A. partList.putAtomic (key, "Blue Shirt");
B. partList.put (key, "Blue Shirt");
C. partList.putIfNotLocked (key, "Blue Shirt");
D. partList.putAbsent(key, "Blu Shirt")
E. if (!partlist.containsKey(key)) partList.put(key, "Blue Shirt");
正解：E
解説: (Topexam メンバーにのみ表示されます)

質問 9：

A. Locale loc1 = "UK";
B. Locale loc2 = Locale.get Instance ( "ru" );
C. Locale loc3 = Locale.getLocaleFactory("RU");
D. Locale loc4 = Locale.UK;
E. Locale loc5 = new Locale("ru", "RU");
正解：D,E
解説: (Topexam メンバーにのみ表示されます)