Oracle 1z0-819 Exam Dumps

Java SE 11 Developer

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Exam Code	1z0-819
Exam Name	Java SE 11 Developer
Questions	296 Questions Answers With Explanation
Update Date	04, 29, 2026
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Demo Questions

Question # 1

Given:LocalDate d1 = LocalDate.of(1997,2,7);DateTimeFormatter dtf =DateTimeFormatter.ofPattern( /*insert code here*/ );System.out.println(dtf.format (d1));Which pattern formats the date as Friday 7th of February 1997?

A. “eeee dd+”th of”+ MMM yyyy”
B. “eeee dd'th of' MMM yyyy”
C. “eeee d+”th of”+ MMMM yyyy”
D. “eeee d’th of’ MMMM yyyy”

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Question # 2

Which two statements are correct about try blocks? (Choose two.) 

A. A try block can have more than one catch block.
B. A finally block in a try-with-resources statement executes before the resources declaredare closed.
C. A finally block must be immediately placed after the try or catch blocks.
D. A try block must have a catch block and a finally block.
E. catch blocks must be ordered from generic to specific exception types.

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Question # 3

Which two safely validate inputs? (Choose two.)

A. Delegate numeric range checking of values to the database.
B. Accept only valid characters and input values.
C. Use trusted domain-specific libraries to validate inputs.
D. Assume inputs have already been validated.
E. Modify the input values, as needed, to pass validation. 

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Question # 4

Which two statements are correct about modules in Java? (Choose two.) 

A. java.base exports all of the Java platforms core packages.
B. module-info.java can be placed in any folder inside module-path.
C. A module must be declared in module-info.java file.
D. module-info.java cannot be empty.
E. By default, modules can access each other as long as they run in the same folder.

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Question # 5

Which describes a characteristic of setting up the Java development environment? 

A. Setting up the Java development environment requires that you also install the JRE.  
B. The Java development environment is set up for all operating systems by default.  
C. You set up the Java development environment for a specific operating system when you install the JDK
D. Setting up the Java development environment occurs when you install an IDE before the JDK.  

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Question # 6

Which three guidelines are used to protect confidential information? (Choose three.) 

A. Limit access to objects holding confidential information.  
B. Clearly identify and label confidential information.  
C. Manage confidential and other information uniformly.  
D. Transparently handle information to improve diagnostics.  
E. Treat user input as normal information.  
F. Validate input before storing confidential information.  
G. Encapsulate confidential information.  

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Question # 7

Given:jdeps -jdkinternals C:\workspace4\SimpleSecurity\jar\classes.jarWhich describes the expected output?

A. jdeps lists the module dependencies and the package names of all referenced JDK internal APIs. If any are found, the suggested replacements are output in the console. 
B. jdeps outputs an error message that the -jdkinternals option requires either the - summary or the - verbose options to output to the console. 
C. The -jdkinternals option analyzes all classes in the .jar and prints all class-level dependencies. 
D. The -jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal APIs. If any are found, the results with suggested replacements are output in the console. 

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Question # 8

Which code fragment does a service use to load the service provider with a Print interface? 

A. private Print print = com.service.Provider.getInstance();
B. private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);
C. private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();
D. private Print print = new com.service.Provider.PrintImpl();

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Question # 9

Which three initialization statements are correct? (Choose three.) 

A. int x = 12_34;
B. short sh = (short)‘A’;
C. String contact# = “(+2) (999) (232)”;
D. boolean true = (4 == 4);
E. float x = 1.99;
F. int[][] e = {{1,1},{2,2}};

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Question # 10

Which two modules include APIs in the Java SE Specification? (Choose two.) 

A. java.logging
B. java.desktop
C. javafx
D. jdk.httpserver 
E. jdk.jartool 

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Question # 11

Given the code fragment:Path currentFile = Paths.get(“/scratch/exam/temp.txt”);Path outputFile = Paths get(“/scratch/exam/new.txt”);Path directory = Paths.get(“/scratch/”);Files.copy(currentFile, outputFile);Files.copy(outputFile, directory);Files.delete (outputFile);The /scratch/exam/temp.txt file exists. The /scratch/exam/new.txt and /scratch/new.txt filesdo not exist.What is the result?

A. /scratch/exam/new.txt and /scratch/new.txt are deleted.
B. The program throws a FileaAlreadyExistsException.
C. The program throws a NoSuchFileException.
D. A copy of /scratch/exam/new.txt exists in the /scratch directory and/scratch/exam/new.txt is deleted.

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