[Dec 11, 2025] Get New 1z1-809 Certification – Valid Exam Dumps Questions
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NEW QUESTION # 122
Given the code fragment:
What is the result?
- A. David
David
[Susan, Allen] - B. Susan
Allen
[David] - C. Susan
Susan
[Susan, Allen] - D. David
Allen
[Susan] - E. Susan
Allen
[Susan, David]
Answer: B
NEW QUESTION # 123
Given the records from the Employeetable:
and given the code fragment:
try {
Connection conn = DriverManager.getConnection (URL, userName, passWord); Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
st.execute("SELECT*FROM Employee");
ResultSet rs = st.getResultSet();
while (rs.next()) {
if (rs.getInt(1) ==112) {
rs.updateString(2, "Jack");
}
}
rs.absolute(2);
System.out.println(rs.getInt(1) + " " + rs.getString(2));
} catch (SQLException ex) {
System.out.println("Exception is raised");
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database accessible with the URL, userName, and passWordexists.
What is the result?
- A. The Employee table is updated with the row:
1 12 Jack
and the program prints:
1 12 Jack - B. The program prints Exception is raised.
- C. The Employee table is not updated and the program prints:
1 12 Jerry - D. The Employee table is updated with the row:
1 12 Jack
and the program prints:
1 12 Jerry
Answer: B
NEW QUESTION # 124
Given that data.txt and alldata.txt are accessible, and the code fragment:
What is required at line n1to enable the code to overwrite alldata.txtwith data.txt?
- A. bw.writeln();
- B. br.close();
- C. bw.flush();
- D. br.flush();
Answer: C
NEW QUESTION # 125
Given:
class Bird {
public void fly () { System.out.print("Can fly"); }
}
class Penguin extends Bird {
public void fly () { System.out.print("Cannot fly"); }
}
and the code fragment:
class Birdie {
public static void main (String [ ] args) {
fly( ( ) -> new Bird ( ));
fly (Penguin : : new);
}
/* line n1 */
}
Which code fragment, when inserted at line n1, enables the Birdie class to compile?
- A. static void fly (Supplier<Bird> bird) {
bird.get( ) fly ();
} - B. static void fly (Consumer<Bird> bird) {
bird :: fly ();
} - C. static void fly (Consumer<? extends Bird> bird) {
bird.accept( ) fly ();
} - D. static void fly (Supplier<? extends Bird> bird) {
LOST
Answer: A
Explanation:
Explanation
NOTE: Very confusing question. There is no logic in the options.
NEW QUESTION # 126
Given:
And given the code fragment:
What is the result?
- A. Compilation fails at line n2.
- B. 0:20
- C. Compilation fails at line n1.
- D. 10:20
Answer: A
NEW QUESTION # 127
Given the code fragments:
and
What is the result?
- A. class java.lang.Exception
- B. A compilation error occurs.
- C. Video played.Game played.
- D. class java.io.IOException
Answer: A
NEW QUESTION # 128
Given the code fragment:
Path file = Paths.get ("courses.txt");
// line n1
Assume the courses.txt is accessible.
Which code fragment can be inserted at line n1 to enable the code to print the content of the courses.txt file?
- A. Stream<String> fc = Files.lines (file);
fc.forEach (s - > System.out.println(s)); - B. List<String> fc = Files.list(file);
fc.stream().forEach (s - > System.out.println(s)); - C. List<String> fc = readAllLines(file);
fc.stream().forEach (s - > System.out.println(s)); - D. Stream<String> fc = Files.readAllLines (file); fc.forEach (s - > System.out.println(s));
Answer: A
NEW QUESTION # 129
Given:
and the code fragment:
Which definition of the ColorSorterclass sorts the blocks list?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION # 130
Given:
What is the result?
- A. 100 0 : 100 200 ;
- B. 100 200 : 100 0 ;
- C. 100 0 : 100 0 ;
- D. 100 200 : 100 200 ;
Answer: B
NEW QUESTION # 131
Given:
and the command:
java Product 0
What is the result?
- A. New Price: 0.0
- B. A NumberFormatException is thrown at run time.
- C. A compilation error occurs at line n1.
- D. An AssertionError is thrown.
Answer: B
NEW QUESTION # 132
Given:
What is the result?
- A. A compilation error occurs.
- B. IT:0.0
- C. A NullPointerExceptionis thrown at run time.
- D. IT:null
Answer: B
NEW QUESTION # 133
Given the code fragment:
public static void main (String [ ] args) throws IOException {
BufferedReader br = new BufferedReader (new InputStremReader
(System.in));
System.out.print ("Enter GDP: ");
//line 1
}
Which code fragment, when inserted at line 1, enables the code to read the GDP from the user?
- A. int GDP = br.read();
- B. int GDP = Integer.parseInt (br.readline());
- C. int GDP = Integer.parseInt (br.next());
- D. int GDP = br.nextInt();
Answer: B
NEW QUESTION # 134
Given the code fragment:
Path p1 = Paths.get(“/Pics/MyPic.jpeg”);
System.out.println (p1.getNameCount() +
“:” + p1.getName(1) +
“:” + p1.getFileName());
Assume that the Picsdirectory does NOT exist.
What is the result?
- A. 1:Pics:/Pics/ MyPic.jpeg
- B. 2:MyPic.jpeg: MyPic.jpeg
- C. 2:Pics: MyPic.jpeg
- D. An exception is thrown at run time.
Answer: B
NEW QUESTION # 135
Assume customers.txt is accessible and contains multiple lines.
Which code fragment prints the contents of the customers.txt file?
- A. Stream<String> lines = Files.lines (Paths.get ("customers.txt")); lines.forEach( c) -> System.out.println(c));
- B. Stream<String> stream = Files.find (Paths.get ("customers.txt")); stream.forEach((String c) -> System.out.println(c));
- C. Stream<Path> stream = Files.list (Paths.get ("customers.txt")); stream.forEach( c) -> System.out.println(c));
- D. Stream<Path> stream = Files.find (Paths.get ("customers.txt")); stream.forEach( c) -> System.out.println(c));
Answer: B
NEW QUESTION # 136
Given:
and the code fragment:
Which definition of the ColorSorterclass sorts the blocks list?
- A.
- B.
- C.
- D.
Answer: A
NEW QUESTION # 137
Given:
and the command:
java Product 0
What is the result?
- A. New Price: 0.0
- B. A NumberFormatException is thrown at run time.
- C. A compilation error occurs at line n1.
- D. An AssertionError is thrown.
Answer: A
NEW QUESTION # 138
Given:
public class Foo<K, V> {
private K key;
private V value;
public Foo (K key, V value) (this.key = key; this value = value;)
public static <T> Foo<T, T> twice (T value) (return new Foo<T, T> (value, value); )
public K getKey () (return key;)
public V getValue () (return value;)
}
Which option fails?
- A. Foo<?, ?> percentage = new Foo <> (97, 32););
- B. Foo<String, String> grade = new Foo <> ("John", "A");
- C. Foo<String, Integer> mark = new Foo<String, Integer> ("Steve", 100););
- D. Foo<String, String> pair = Foo.<String>twice ("Hello World!");
Answer: A
NEW QUESTION # 139
Given the code fragment:
Path source = Paths.get ("/data/december/log.txt");
Path destination = Paths.get("/data");
Files.copy (source, destination);
and assuming that the file /data/december/log.txt is accessible and contains:
10-Dec-2014 - Executed successfully
What is the result?
- A. A FileNotFoundException is thrown at run time.
- B. A file with the name log.txt is created in the /data directory and the content of the /data/december/log.txt file is copied to it.
- C. The program executes successfully and does NOT change the file system.
- D. A FileAlreadyExistsException is thrown at run time.
Answer: C
NEW QUESTION # 140
Given the records from the Employee table:
and given the code fragment:
try {
Connection conn = DriverManager.getConnection (URL, userName, passWord); Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE); st.execute("SELECT*FROM Employee"); ResultSet rs = st.getResultSet(); while (rs.next()) { if (rs.getInt(1) ==112) { rs.updateString(2, "Jack");
}
}
rs.absolute(2);
System.out.println(rs.getInt(1) + " " + rs.getString(2));
} catch (SQLException ex) {
System.out.println("Exception is raised");
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database accessible with the URL, userName, and passWord exists.
What is the result?
- A. The Employee table is not updated and the program prints:112 Jerry
- B. The Employee table is updated with the row:112 Jackand the program prints:112 Jerry
- C. The program prints Exception is raised.
- D. The Employee table is updated with the row:112 Jackand the program prints:112 Jack
Answer: A
NEW QUESTION # 141
Given:
What is the result?
- A. Green 4
- B. Compilation fails
- C. Red 0
Orange 1 - D. Red 0
Orange 0
Green 6 - E. Red 0
Orange 0
Green 3
Answer: B
NEW QUESTION # 142
Which two items can legally be contained within a java class declaration?
- A. A field declaration
- B. An import statement
- C. A method declaration
- D. A package declaration
Answer: A,C
Explanation:
http://docs.oracle.com/javase/tutorial/java/javaOO/methods.html
NEW QUESTION # 143
Given the code fragment:
List<Integer> nums = Arrays.asList (10, 20, 8):
System.out.println (
//line n1
);
Which code fragment must be inserted at line n1 to enable the code to print the maximum number in the nums list?
- A. nums.stream().max()
- B. nums.stream().map(a -> a).max()
- C. nums.stream().max(Comparator.comparing(a -> a)).get()
- D. nums.stream().max(Integer : : max).get()
Answer: A
NEW QUESTION # 144
Given:
Your design requires that:
fuelLevel of Engine must be greater than zero when the start()method is invoked.
The code must terminate if fuelLevelof Engineis less than or equal to zero.
Which code fragment should be added at line n1to express this invariant condition?
- A. assert fuelLevel > 0: "Impossible fuel" ;
- B. assert fuelLevel < 0: System.exit(0);
- C. assert (fuelLevel > 0) : System.out.println ("Impossible fuel");
- D. assert (fuelLevel) : "Terminating...";
Answer: B
NEW QUESTION # 145
......
Oracle 1z0-809 exam is a multiple-choice exam that consists of 85 questions, and candidates are given 150 minutes to complete it. 1z1-809 exam is available in several languages, including English, Japanese, and Simplified Chinese. The passing score for the Oracle 1z0-809 exam is 63%, and the cost of the exam varies depending on the location.
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