1Z1-809參考資料 - Oracle新版1Z1-809題庫 & Java SE 8 Programmer II - Royalholidayclubbed

 

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Java SE 1z1-809 你還在猶豫什麼,機不可失,失不再來。

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在如今競爭激烈的IT行業中,通過了Oracle 1z1-809參考資料 認證考試是有很多好處的。因為有了Oracle 1z1-809參考資料 認證證書就可以提高收入。拿到了Oracle 1z1-809參考資料 認證證書的人往往要比沒有證書的同行工資高很多。

Oracle 1z1-809參考資料 - 如果你還是不相信的話,那就趕快自己來體驗一下吧。

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你覺得成功很難嗎?覺得IT認證考試很難通過嗎?你現在正在為了Oracle 的1z1-809參考資料認證考試而歎氣嗎?其實這完全沒有必要。IT認證考試其實沒有你想像的那麼神秘,我們可以利用適當的工具去戰勝它。

1z1-809 PDF DEMO:

QUESTION NO: 1
Given the code fragments:
class Employee {
Optional<Address> address;
Employee (Optional<Address> address) {
this.address = address;
}
public Optional<Address> getAddress() { return address; }
}
class Address {
String city = "New York";
public String getCity { return city: }
public String toString() {
return city;
}
}
and
Address address = null;
Optional<Address> addrs1 = Optional.ofNullable (address);
Employee e1 = new Employee (addrs1);
String eAddress = (addrs1.isPresent()) ? addrs1.get().getCity() : "City Not available"; What is the result?
A. City Not available
B. null
C. New York
D. A NoSuchElementException is thrown at run time.
Answer: A

QUESTION NO: 2
Given that course.txt is accessible and contains:
Course : : Java
and given the code fragment:
public static void main (String[ ] args) {
int i;
char c;
try (FileInputStream fis = new FileInputStream ("course.txt");
InputStreamReader isr = new InputStreamReader(fis);) {
while (isr.ready()) { //line n1
isr.skip(2);
i = isr.read ();
c = (char) i;
System.out.print(c);
}
} catch (Exception e) {
e.printStackTrace();
}
}
What is the result?
A. ueJa
B. The program prints nothing.
C. ur :: va
D. A compilation error occurs at line n1.
Answer: A

QUESTION NO: 3
Given that /green.txt and /colors/yellow.txt are accessible, and the code fragment:
Path source = Paths.get("/green.txt);
Path target = Paths.get("/colors/yellow.txt);
Files.move(source, target, StandardCopyOption.ATOMIC_MOVE);
Files.delete(source);
Which statement is true?
A. A FileAlreadyExistsException is thrown at runtime.
B. The file green.txt is moved to the /colors directory.
C. The yellow.txt file content is replaced by the green.txt file content and an exception is thrown.
D. The green.txt file content is replaced by the yellow.txt file content and the yellow.txt file is deleted.
Answer: A

QUESTION NO: 4
Given the code fragments:
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 27 with:throw e;
B. Comment the lines 28, 29 and 30.
C. Replace line 26 with:} catch (ArithmeticException | NumberFormatException e) {
D. Replace line 26 with:} catch (Exception | ArithmeticException | NumberFormatException e) {
Answer: C

QUESTION NO: 5
Given:
and this code fragment:
What is the result?
A. Open-Close-Open-
B. Open-Close-Exception - 1Open-Close-
C. A compilation error occurs at line n1.
D. Open-Close-Open-Close-
Answer: C

Palo Alto Networks CloudSec-Pro - 就好比我,平時不努力,老大徒傷悲。 CompTIA 220-1202 - Oracle的認證考試資格是很重要的資格,因此參加Oracle考試的人變得越來越多了。 Splunk SPLK-1002 - 為什麼Royalholidayclubbed能得到大家的信任呢?那是因為Royalholidayclubbed有一個IT業界的精英團體,他們一直致力於為大家提供最優秀的考試資料。 Microsoft GH-200 - Royalholidayclubbed就是你最好的選擇。 ServiceNow CSA - 如果不相信就先試用一下。

Updated: May 28, 2022

 

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Revised: 21 Oct 2007

 

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