1Z0-819 Exam Dumps – Our Features

Given:var data = new ArrayList<>();data.add(''Peter'');data.add(30);data.add(''Market Road'');data.set(1, 25);data.remove(2);data.set(3, 1000L);System.out.print(data);What is the output?

• [Market Road, 1000]
• [Peter, 30, Market Road]
• [Peter, 25, null, 1000]
• An exception is thrown at run time.

Which is the correct order of possible statements in the structure of a Java class file?

• class, package, import
• package, import, class
• import, package, class
• package, class, import
• import, class, package

Which is a proper JDBC URL?

• jdbe.mysql.com://localhost:3306/database
• http://localhost.mysql.com:3306/database
• http://localhost mysql.jdbc:3306/database
• jdbc:mysql://localhost:3306/database

Which three annotation uses are valid? (Choose three.)

• Function<String, String> func = (@NonNull x) > x.toUpperCase();
• var v = ''Hello'' + (@Interned) ''World''
• Function<String, String> func = (var @NonNull x) > x.toUpperCase();
• Function<String, String> func = (@NonNull var x) > x.toUpperCase();
• var myString = (@NonNull String) str;
• var obj = new @Interned MyObject();

Which two describe reasons to modularize the JDK? (Choose two.)

• easier to understand the Java language
• improves security and maintainability
• easier to expose implementation details
• improves application robustness
• easier to build a custom runtime linking application modules and JDK modules

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 files do not exist.What is the result?

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

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

• private Print = com.service.Provider.getInstance();
• private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);
• private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();
• private Print = new com.service.Provider.PrintImpl();

Given the code fragment:Which two code snippets inserted independently inside print method print Mondial: domainmodal?

• prefix + name
• prefix + getName
• new Main (} .prefix + new Main().name
• prefix + Main, name
• Main.prefix + Main.name
• Main.prefix + Main.getName()

Which interface in the java.util.function package will return a void return type?

• Supplier
• Predicate
• Function
• Consumer

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

• Limit access to objects holding confidential information.
• Clearly identify and label confidential information.
• Manage confidential and other information uniformly.
• Transparently handle information to improve diagnostics.
• Treat user input as normal information.
• Validate input before storing confidential information.
• Encapsulate confidential information.