Free 1Z1-804 Questions for Oracle 1Z1-804 Exam

Question #1

Given the cache class:

A. Compilation fails at line 1.

B. Compilation fails at line 3.

C. 101

D. Compilation fails at line 2.

Discussion 0

Correct Answer: A Vote an answer

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Question #2

Given:

What is the result?

A. 5

B. Compilation fails due to an error on line 6

C. 6

D. An exception is thrown at runtime

E. Compilation fails due to an error on line 7

Discussion 0

Correct Answer: D Vote an answer

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Question #3

ITEM Table
*ID, INTEGER: PK
*DESCRIP, VARCHAR(100)
*PRICE, REAL
*QUALITY, INTEGER
And given the code fragment (assuming that the SQL query is valid):

What is the result of compiling and executing this code?

A. The code prints Error

B. The code prints information about Item 110

C. An exception is thrown at runtime

D. Compile fails

Discussion 0

Correct Answer: A Vote an answer

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Question #4

Given the code fragment:

Which code fragment inserted at line ***, enables the code to compile?

A. public void process (){
try {
super.process ();
while ((record = br.readLine()) !=null) {
System.out.println(record);
}
} catch (IOException | FileNotFoundException e) { }
}

B. public void process (){
try {
super.process ();
while ((record = br.readLine()) !=null) {
System.out.println(record);
}
} catch (IOException e) {}
}

C. public void process () throws Exception {
super.process ();
while ((record = br.readLine()) !=null) {
System.out.println(record);
}}

D. public void process () throws FileNotFoundException, IOException { super.process ();
while ((record = br.readLine()) !=null) {
System.out.println(record);
}}

E. public void process () throws IOException {
super.process ();
while ((record = br.readLine()) != null) {
System.out.println(record);
}}

Discussion 0

Correct Answer: B Vote an answer

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Question #5

Given the code fragment: Which two try statements, when inserted at line ***, enable the code to successfully move the file info.txt to the destination directory, even if a file by the same name already exists in the destination directory?

A. try(BufferedReader br = Files.newBufferedReader(Paths.get(source), Charset.forName("UTF
8"));
BufferedWriter bw = Files.newBufferedWriter(Paths.get(dest), Charset.forName("UTF-8")); String
record =
"";
while ((record = br.readLine()) ! = null) {
bw.write(record);
bw.newLine();
} Files.delete(Paths.get(source));

B. try (FileChannel in = new FileInputStream (source). getChannel(); FileChannel out = new FileOutputStream
(dest).getChannel()) { in.transferTo(0, in.size(), out);

C. try ( Files.copy(Paths.get(source), Paths.get(dest),StandardCopyOption.REPLACE_EXISTING); Files.delete
(Paths.get(source));

D. try (Files.move(Paths.get(source),Paths.get(dest));

E. try ( Files.copy(Paths.get(source),Paths.get(dest)); Files.delete (Paths.get(source));

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Correct Answer: A,C Vote an answer

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Question #6

Which two compile?

A. interface Compilable {
final void compile();
}

B. interface Compilable {
protected abstract void compile ();
}

C. interface Compilable {
void compile();
}

D. interface Compilable { static void compile(); }

E. interface Compilable { abstract void compile(); }

Discussion 0

Correct Answer: C,E Vote an answer

Question #7

Given: Which three statements concerning the OO concepts "is-a" and "has-a" are true?

A. Flommer is-a Glommer

B. Flommer has-a Tagget

C. Flimmer is-a Plinkable

D. Tagget is-a Plinkable

E. Flimmer is-a Flommer

F. Tagget has-a String

G. Flommer is-a Plinkable

Discussion 0

Correct Answer: B,C,G Vote an answer

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Question #8

Given:

Which two are true?

A. Runnable is printed

B. Two new threads of exclusion are started within the main method

C. Thread is printed

D. One new thread of execution is started within the main method

E. No new threads of execution are started within the main method

F. No output is produced

Discussion 0

Correct Answer: E,F Vote an answer

Question #9

Given:
String s = new String("3"); System.out.print(1 + 2 + s + 4 + 5);
What is the result?

A. 12345

B. 3345

C. Compilation fails.

D. 339

E. 1239

Discussion 0

Correct Answer: B Vote an answer

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Question #10

How many Threads are created when passing task to an Executor instance?

A. A developer-defined number of Threads is used to execute tasks.

B. A single Thread Is used to execute all tasks.

C. The method used to obtain the Executor determines how many Threads are used to execute tasks.

D. A number of Threads equal to the number of CPUs Is used to execute tasks.

E. A new Thread is used for each task.

F. A number of Threads determined by system load is used to execute tasks.

Discussion 0

Correct Answer: C Vote an answer

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