1z1-819試験無料問題集（297題）「Oracle Java SE 11 Developer 認定」

出題：1

Given:

What will secure this code from a potential Denial of Service condition?

A. On Line 1, use try with resources when opening each dataReader.

B. After Line 3, add dataReader.close().

C. After Line 4, add indexReader.close().

D. On Line 3, enclose processData(dataReader) with try with resources.

E. Before Line 1, check the size of dataFiles to make sure it does not exceed a threshold.

正解：D 解答を投票する

出題：2

Given:

What is the result?

A. The compilation fails.

B. Orange Juice

C. Orange Juice Apple Pie Lemmon Ice Raspberry Tart

D. The program prints nothing.

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：3

Given:

Assume the file on path does not exist. What is the result?

A. The compilation fails.

B. /u01/work/filestore.txt is not deleted.

C. Exception

D. /u01/work/filestore.txt is deleted.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

Given:

and the code fragment:
Which two Map objects group all employees with a salary greater than 30 by neighborhood? (Choose two.)

正解：C 解答を投票する

出題：5

Given:

Which three are true?

A. b1. foo(c) prints Bonjour le monde!

B. f1.foo(c) prints Hello world!

C. b1.foo(c) prints o1a Mundo!

D. F2.foo(c) prints hello world !

E. f1.foo(c) prints Honjour le mond!

F. f1.foo(c) prints hello world!

G. f2.foo(c) prints ola Mund!

H. f1.foo(c) prints ola Mundo1

I. b1.foo(c) prints Bonjour le monde!

正解：B,E,F 解答を投票する

出題：6

Given the code fragment:

You want to display the value of currency as $100.00.
Which code inserted on line 1 will accomplish this?

A. NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);

B. NumberFormat formatter = NumberFormat.getInstance(locale);

C. NumberFormat formatter = NumberFormat.getCurrency(locale);

D. NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();

正解：D 解答を投票する

出題：7

Given:

What is the result?

A. The compilation fails.

B. SomeClass#methodA()AnotherClass#methodA()

C. A ClassCastException is thrown at runtime.

D. SomeClass#methodA()SomeClass#methodA()

E. AnotherClass#methodA()AnotherClass#methodA()

F. AnotherClass#methodA()SomeClass#methodA()

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：8

Given:

What is the result?

A. At once 1

B. Hat at store 1

C. At once 0

D. Hat at store 4

E. An indexOutofBoundsException is thrown at runtime.

正解：B 解答を投票する

出題：9

Given:

executed with this command:
java Main one two three
What is the output of this class?

A. A java.lang.ArrayIndexOutOfBoundsException is thrown.

B. The compilation fails.

C. 1) one

D. 1) one2) two3) three

E. nothing

正解：D 解答を投票する

出題：10

Given the code fragment from Box. Java:

Given the code fragment from item.java:

Given the information:
The classes Box and items are encapsulated with getters and setters methods. The classes Box and Item contains required constructors source code.
and the code fragment:

Which action serializes the b1 object?

A. Override readObject () and writeObject () method in the Book class.

B. Implement the Serializable interface in the item class.

C. Handle NoteSerilaizeableException in the try clause or throw in the main() method definition.

D. Add SerialVersionID to the Box and item class

E. Remove out.flush () method invocation.

正解：B 解答を投票する

出題：11

Given:

Which statement on line 1 is calling the method of the supplier object correctly?

A. System.out.printin(supplier.test() );

B. System.out.printin(supplier.accept() );

C. System.out.printin(supplier.apply() );

D. System.out.printin(supplier.get() );

正解：D 解答を投票する

出題：12

Given:

What is the result?

A. null

B. Joe Bloggs

C. The compilation fails due to an error in line 1.

D. p1

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：13

Given:

What must be added in line 1 to compile this class?

A. catch(FileNotFoundException | IndexOutOfBoundsException e) { }

B. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }

C. catch(IOException e) { }

D. catch(FileNotFoundException | IOException e) { }

E. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }

正解：C 解答を投票する

出題：14

Given the code fragment:

What is the result?

A. false true true

B. true false false

C. false true false

D. false false true

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

1z1-819試験無料問題集「Oracle Java SE 11 Developer 認定」