最新的Oracle Java SE 7 Programmer II Exam (1Z1-804日本語版) - 1Z1-804日本語免費考試真題

A. Option D

B. Option B

C. Option C

D. Option A

A. Option D

B. Option B

C. Option C

D. Option A

A. FileWriter w = new FileWriter("/tmp/msg.txt", Writer.MODE_APPEND);
append("Java 7");
close();

B. FileWriter w = new FileWriter("/tmp/msg.txt", FileWriter.MODE_APPEND);
append("Java 7");
close();

C. FileWriter w = new FileWriter("/tmp/msg.txt", true);
append("Java 7");
close();

D. FileWriter w = new FileWriter("/tmp/msg.txt");
append("Java 7");
close();

A. DelayedExecutorService

B. ScheduledExecutorService

C. TimedExecutorService

D. FutureExecutorService

E. FixedExecutorService

A. Option D

B. Option F

C. Option B

D. Option C

E. Option E

F. Option A

A. Option D

B. Option B

C. Option C

D. Option A

A. false \sales\quarter\ . . \qtrlreport.txt

B. false \quarter\ . . \qtrlreport.txt

C. true . . \ . . \ . . \ annualreport.txt

D. true \ . . \ . . \annualreport.txt

A. class Singleton {
private static Singleton instance;
private Singleton () {}
public static synchronized Singleton getInstance() {
if (instance == null) {
instance = new Singleton ();
}
return instance;
}
}

B. enum Singleton {
INSTANCE;
}

C. class Singleton {
Singleton () {}
private static class SingletonHolder {
private static final Singleton INSTANCE = new Singleton ();
}
public static Singleton getInstance () {
return SingletonHolder.INSTANCE;
}
}

D. class Singleton {
private static Singleton instance = new Singleton();
protected Singleton () {}
public static Singleton getInstance () {
return instance;
}
}