Oracle 1Z1-804 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1Z1-804
Exam Name/Title: Java SE 7 Programmer II Exam
Certification Provider: Oracle
Corresponding Certification: Java and Middleware

Exam Questions: 150
Updated On: Aug 24, 2026

Question #10

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.move(Paths.get(source),Paths.get(dest));

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

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

Discussion 0

Correct Answer: A,E Vote an answer

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Question #11

Given:
import java.util.concurrent.atomic.AtomicInteger;
public class AtomicCounter {
private AtomicInteger c = new AtomicInteger(0);
public void increment() {
// insert code here
}
}
Which line of code, inserted inside the increment () method, will increment the value of c?

A. c.addAndGet();

B. c++;

C. c.getAndIncrement ();

D. c = c+1;

Discussion 0

Correct Answer: C Vote an answer

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Question #12

A valid reason to declare a class as abstract is to:

A. prevent a class from being extended

B. define a class that prevents variable state from being stored when object Instances are serialized

C. define methods within a parent class, which may not be overridden in a child class

D. define common method signatures in a class, while forcing child classes to contain unique method implementations

E. prevent instance variables from being accessed

F. define a class with methods that cannot be concurrently called by multiple threads

Discussion 0

Correct Answer: D Vote an answer

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Question #13

Which two forms of abstraction can a programmer use in Java?

A. interfaces

B. enums

C. primitives

D. abstract classes

E. primitive wrappers

F. concrete classes

Discussion 0

Correct Answer: A,D Vote an answer

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Question #14

Given:

What is the result?

A. John Adams George Washington Thomas Jefferson

B. Thomas Jefferson John Adams George Washington

C. Compilation fails

D. An exception is thrown at runtime

E. George Washington John Adams Thomas Jefferson

Discussion 0

Correct Answer: E Vote an answer

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Question #15

Which two are valid initialization statements?

A. Hashtable m= new HashMap();

B. Map<List, ArrayList> m = new Hashtable<List, ArrayList>();

C. SortedMap<Object, Object> m = new TreeMap<Object, Object> ();

D. Collection m = new TreeMap<Object, Object>();

E. Map<String, String> m = new SortedMap<String, String>();

F. HashMap<Object, Object> m = new SortedMap<Object, Object>();

Discussion 0

Correct Answer: B,C Vote an answer

Question #16

Given that myfile.txt contains:

What is the result?

A. an exception is thrown at runtime

B. new file.txt contains:
1: First
2: Second
3:
Third

C. compilation fails

D. newfile.txt is empty

E. new file.txt contains:
1:
First 2: Second 3: Third

Discussion 0

Correct Answer: B Vote an answer

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Question #17

Which code fragment demonstrates the proper way to handle JDBC resources?

A. try {
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery (query);
while (rs.next()) (/* . . . */)
} catch (SQLException e) {}

B. try {
ResultSet rs = stmt.executeQuery (query);
Statement stmt = con.createStatement();
while (rs.next()) (/* . . . */)
} finally {
rs.close();
stmt.close();
}

C. try {
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery (query);
while (rs.next()) (/* . . . */)
} finally {
rs.close();
stmt.close();
}

D. try {
ResultSet rs = stmt.executeQuery (query);
statement stmt = con.createStatement();
while (rs.next()) (/* . . . */)
} catch (SQLException e) {}

Discussion 0

Correct Answer: C Vote an answer

Question #18

Given the code fragment:

What is the result?

A. D

B. B D

C. An exception is thrown at runtime

D. Null B null D

E. Null B D

Discussion 0

Correct Answer: B Vote an answer

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