Oracle 1Z0-829 Dumps - Pass Java SE 17 Developer Exam in 2026

The correct answer is A and F because the wordDoc class must be a non-sealed class or a final class to extend the sealed Doc class. Option B is incorrect because the wordDoc class must be non-sealed or final. Option C is incorrect because the wordDoc class cannot be in a different package than the Doc class. Option D is incorrect because the wordDoc class cannot be a sealed class. Option E is incorrect because the wordDoc class cannot be an abstract class.Reference:Oracle Certified Professional: Java SE 17 Developer,3 Sealed Classes - Oracle Help Center

The code fragment is trying to read an object from a file using the ObjectInputStream class. This class throws an IOException and a ClassNotFoundException. To handle these exceptions, the main method signature should declare that it throws these exceptions. Otherwise, the code will not compile. If the main method throws these exceptions, the code will print Wagon : 200, which is the result of calling the toString method of the LuxuryCar object that was written to the file.Reference:ObjectInputStream (Java SE 17 & JDK 17) - Oracle,ObjectOutputStream (Java SE 17 & JDK 17) - Oracle

The code creates two threads, t1 and t2, and starts them. The threads will print their names and the value of the Atomic Integer object, x, which is initially set to 1. The threads will then increment the value of x and print their names and the new value of x. Since the threads are started at the same time, the output will be in random order. However, the final output will always be t1 : 1 : t2: 1 : t1 : 2 : t2: 2:Reference:AtomicInteger (Java SE 17 & JDK 17) - Oracle

The code fragment is trying to obtain the java.io.Console object, which is a class that provides methods to access the character-based console device, if any, associated with the current Java virtual machine. The correct way to obtain the Console object is to call the static method Console console() in the java.lang.System class. This method returns the unique Console object associated with the current Java virtual machine, if any. Therefore, option A is correct, as it calls System.console() and assigns it to a Console variable.Reference:

https://docs.oracle.com/javase/17/docs/api/java.base/java/io/Console.html

https://docs.oracle.com/javase/17/docs/api/java.base/java/lang/System.html#console()

https://education.oracle.com/products/trackp_OCPJSE17

https://mylearn.oracle.com/ou/learning-path/java-se-17-developer/99487

The code given is an interface and a class that implements the interface. The interface has three methods, m1(), m2(), and m3(). The class has one method, m1(). The only two method invocations that will execute are D and E. D is a call to the m2() method in the class, and E is a call to the m3() method in the interface.Reference: https://education.oracle.com/products/trackp_OCPJSE17,3,4,5