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Download New Released Oracle 1Z0-819 Exam Dumps PDF[2021]

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Download New Released Oracle 1Z0-819 Exam Dumps PDF[2021]

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  4. Question No. 1 Given: Which annotation should be used to remove warnings from compilation? A. @SuppressWarnings on the main and print methods B. @SuppressWarnings(''unchecked'') on main and @SafeVarargs on the print method C. @SuppressWarnings(''rawtypes'') on main and @SafeVarargs on the print method D. @SuppressWarnings(''all'') on the main and print methods Answer: B Question No. 2 Given: jdeps -jdkinternals C:\workspace4\SimpleSecurity\jar\classes.jar Which 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. Answer: A Question No. 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.

  5. D. Assume inputs have already been validated. E. Modify the input values, as needed, to pass validation. Answer: A, B Question No. 4 Consider this method declaration: A) ''SET SESSION AUTHORIZATION '' + user B) ''SET SESSION AUTHORIZATION '' + stmt.enquoteIdentifier(user) Is A or B the correct replacement for and why? A. A, because it sends exactly the value of user provided by the calling code. B. B, because enquoting values provided by the calling code prevents SQL injection. C. A and B are functionally equivalent. D. A, because it is unnecessary to enclose identifiers in quotes. E. B, because all values provided by the calling code should be enquoted. Answer: A Question No. 5 Which three annotation uses are valid? (Choose three.) A. Function func = (@NonNull x) > x.toUpperCase(); B. var v = ''Hello'' + (@Interned) ''World'' C. Function func = (var @NonNull x) > x.toUpperCase(); D. Function func = (@NonNull var x) > x.toUpperCase(); E. var myString = (@NonNull String) str; F. var obj = new @Interned MyObject(); Answer: A, C, F

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