Share Latest Dec-2025 1z0-809 DUMP with 209 Questions and Answers
PDF Dumps 2025 Exam Questions with Practice Test
NEW QUESTION # 13
Given the code fragment:
Path path1 = Paths.get("/app/./sys/");
Path res1 = path1.resolve("log");
Path path2 = Paths.get("/server/exe/");
Path res1 = path1.resolve("/readme/");
System.out.println(res1);
System.out.println(res2);
What is the result?
/app/sys/log
- A. /server/exe/readme
/app/./sys/log - B. /readme/server/exe
/app/log/sys - C. /readme
/app/./sys/log - D. /server/exe/readme
Answer: C
NEW QUESTION # 14
Given:
Which is refactored code with functional interfaces?
- A.
- B.
- C.
- D.
Answer: D
NEW QUESTION # 15
You are asked to create a method that accepts an array of integers and returns the highest value from that array.
Given the code fragment:
Which method signature do you use at line n1?
- A. public int findMax (int [ ] numbers)
- B. final int findMax (int [ ] )
- C. static int [ ] findMax (int max)
- D. static int findMax (int [ ] numbers)
Answer: D
NEW QUESTION # 16
Given:
What is the result?
- A. A NullPointerException is thrown at runtime.
- B. An ArrayIndexOutOfBoundsException is thrown at runtime.
- C. null
Richard
Donald - D. Compilation fails.
- E. Richard
Donald
Answer: A
NEW QUESTION # 17
Given:
What is the result?
- A. Welcome Log 1:0
- B. Welcome Log 2:1
- C. Hello Log 2:1
- D. Hello Log 1:0
Answer: B
NEW QUESTION # 18
Given the EMPLOYEE table;
Given the code fragment:
Assuming the database supports scrolling and updating, what is the result?
- A. A new record is inserted and Employee Id: 102, Employee Name: Peter is displayed.
- B. A new record is inserted and Employee Id: 104, Employee Name: Michael is displayed.
- C. The program throws a runtime exception at Line 1.
- D. A compilation error occurs.
Answer: A
NEW QUESTION # 19
Given the definition of the Employee class:
and this code fragment:
What is the result?
- A. [hr:Eva, hr:Bob, sales:Bob, sales:Ada]
- B. [hr:Bob, hr:Eva, sales:Ada, sales:Bob]
- C. [Ada:sales, Bob:sales, Bob:hr, Eva:hr]
- D. [sales:Ada, hr:Bob, sales:Bob, hr:Eva]
Answer: B
NEW QUESTION # 20
Given:
and the code fragment:
What is the result?
- A. A compilation error occurs because the try block is declared without a catch or finally block.
- B. 0
- C. An exception is thrown at line n2.
- D. A compilation error occurs at line n1.
Answer: B
NEW QUESTION # 21
Given the code fragment:
class CallerThread implements Callable<String> {
String str;
public CallerThread(String s) {this.str=s;}
public String call() throws Exception {
return str.concat(“Call”);
}
}
and
public static void main (String[] args) throws InterruptedException,
ExecutionException
{
ExecutorService es = Executors.newFixedThreadPool(4); //line n1
Future f1 = es.submit (newCallerThread(“Call”));
String str = f1.get().toString();
System.out.println(str);
}
Which statement is true?
- A. The program prints Call Calland terminates.
- B. The program prints Call Calland does not terminate.
- C. A compilation error occurs at line n1.
- D. An ExecutionExceptionis thrown at run time.
Answer: B
NEW QUESTION # 22
Given the content:
and given the code fragment:
Which two code fragments, when inserted at line 1 independently, enable the code to print "Wie geht's?"
- A. currentLocale = Locale.getInstance(Locale.GERMAN,Locale.GERMANY);
- B. currentLocale = new Locale ("de", "DE");
- C. currentLocale = Locale.GERMAN;
- D. currentLocale = new Locale.Builder ().setLanguage ("de").setRegion ("DE").build();
- E. currentlocale = new Locale();currentLocale.setLanguage ("de");currentLocale.setRegion ("DE");
Answer: D,E
NEW QUESTION # 23
Given:
public interface Moveable<Integer> {
public default void walk (Integer distance) {System.out.println
("Walking");)
public void run(Integer distance);
}
Which statement is true?
- A. Moveablecan be used as below:
Moveable animal = (Integer n) - > System.out.println(n);
animal.run(100);
Moveable.walk(20); - B. Moveablecan be used as below:
Moveable<Integer> animal = n - > System.out.println("Running" + n);
animal.run(100);
animal.walk(20); - C. Moveablecan be used as below:
Moveable<Integer> animal = n - > n + 10;
animal.run(100);
animal.walk(20); - D. Movablecannot be used in a lambda expression.
Answer: B
NEW QUESTION # 24
Given the definition of the Emp class:
public class Emp
private String eName;
private Integer eAge;
Emp(String eN, Integer eA) {
this.eName = eN;
this.eAge = eA;
}
public Integer getEAge () {return eAge;}
public String getEName () {return eName;}
}
and code fragment:
List<Emp>li = Arrays.asList(new Emp("Sam", 20), New Emp("John", 60), New Emp("Jim", 51));
Predicate<Emp> agVal = s -> s.getEAge() > 50;//line n1
li = li.stream().filter(agVal).collect(Collectors.toList());
Stream<String> names = li.stream()map.(Emp::getEName);//line n2
names.forEach(n -> System.out.print(n + " "));
What is the result?
- A. A compilation error occurs at line n2.
- B. John Jim
- C. Sam John Jim
- D. A compilation error occurs at line n1.
Answer: B
NEW QUESTION # 25
Given:
and the code fragment:
What is the result?
- A. A compilation error occurs at line n2.
- B. A compilation error occurs because the try block doesn't have a catch or finally block.
- C. A compilation error occurs at line n1.
- D. The program compiles successfully.
Answer: D
NEW QUESTION # 26
Given the code fragment:
public void recDelete (String dirName) throws IOException {
File [ ] listOfFiles = new File (dirName) .listFiles();
if (listOfFiles ! = null && listOfFiles.length >0) {
for (File aFile : listOfFiles) {
if (aFile.isDirectory ()) {
recDelete (aFile.getAbsolutePath ());
} else {
if (aFile.getName ().endsWith (".class"))
aFile.delete ();
}
}
}
}
Assume that Projectscontains subdirectories that contain .classfiles and is passed as an argument to the recDelete ()method when it is invoked.
What is the result?
- A. The method executes and does not make any changes to the Projectsdirectory.
- B. The method throws an IOException.
- C. The method deletes the .classfiles of the Projectsdirectory only.
- D. The method deletes all the .classfiles in the Projectsdirectory and its subdirectories.
Answer: C
NEW QUESTION # 27
Given the code fragments:
class Caller implements Callable<String> {
String str;
public Caller (String s) {this.str=s;}
public String call()throws Exception { return str.concat ("Caller");}
}
class Runner implements Runnable {
String str;
public Runner (String s) {this.str=s;}
public void run () { System.out.println (str.concat ("Runner"));}
}
and
public static void main (String[] args) throws InterruptedException, ExecutionException { ExecutorService es = Executors.newFixedThreadPool(2); Future f1 = es.submit (new Caller ("Call")); Future f2 = es.submit (new Runner ("Run")); String str1 = (String) f1.get(); String str2 = (String) f2.get();//line n1 System.out.println(str1+ ":" + str2);
}
What is the result?
- A. The program terminates after printing:Run RunnerCall Caller : Run
- B. An Execution is thrown at run time.
- C. The program prints:Run RunnerCall Caller : nullAnd the program does not terminate.
- D. A compilation error occurs at line n1.
Answer: B
NEW QUESTION # 28
Which two reasons should you use interfaces instead of abstract classes?
- A. You expect that unrelated classes would implement your interfaces.
- B. You want to share code among several closely related classes.
- C. You want to take advantage of multiple inheritance of type.
- D. You expect that classes that implement your interfaces have many common methods or fields, or require access modifiers other than public.
- E. You want to declare non-static on non-final fields.
Answer: A,C
Explanation:
https://docs.oracle.com/javase/tutorial/java/IandI/abstract.html
NEW QUESTION # 29
Given:
class Worker extends Thread {
CyclicBarrier cb;
public Worker(CyclicBarrier cb) { this.cb = cb; }
public void run () {
try {
cb.await();
System.out.println("Worker...");
} catch (Exception ex) { }
}
}
class Master implements Runnable { //line n1
public void run () {
System.out.println("Master...");
}
}
and the code fragment:
Master master = new Master();
//line n2
Worker worker = new Worker(cb);
worker.start();
You have been asked to ensure that the run methods of both the Worker and Master classes are executed.
Which modification meets the requirement?
- A. At line n2, insert CyclicBarrier cb = new CyclicBarrier(1, master);
- B. Replace line n1 with class Master extends Thread {
- C. At line n2, insert CyclicBarrier cb = new CyclicBarrier(master);
- D. At line n2, insert CyclicBarrier cb = new CyclicBarrier(2, master);
Answer: B
NEW QUESTION # 30
What is true about the java.sql.Statement interface?
- A. It is used to get an instance of a Connection object by using JDBC drivers.
- B. It provides a cursor to fetch the resulting data.
- C. It provides a session with the database.
- D. It provides a class for executing SQL statements and returning the results.
Answer: D
NEW QUESTION # 31
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