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Title: [Q31-Q48] Free 1Z0-819 Exam Files Downloaded Instantly UPDATED [2023]

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 Free 1Z0-819 Exam Files Downloaded Instantly UPDATED [2023]
100% Pass Guaranteed Free 1Z0-819 Exam Dumps

Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819
The following will be discussed in the ORACLE 1Z0-006 exam dumps:
Use local variable type inference, including as lambda parametersUse primitives and wrapper classes, including, operators, parentheses, type promotion and castingHandle text using String and StringBuilder classes

 


Q31. Given:Which three actions implement Java SE security guidelines? (Choose three.)
 Change line 7 to return names.clone();.
 Change line 4 to this.names = names.clone();.
 Change the getNames() method name to get$Names().
 Change line 6 to public synchronized String[] getNames() {.
 Change line 2 to private final String[] names;.
 Change line 3 to private Secret(String[] names) {.
 Change line 2 to protected volatile String[] names;.
Q32. Given the code fragment:Which code fragment replaces the for statement?
 IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);
 IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);
 intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);
 IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);
Q33. Given the code fragment:What is the result?
 01
 0
 1
 The program prints nothing.
 It prints 1 in the infinite loop.
Q34. Which two interfaces are considered to be functional interfaces? (Choose two.)@FunctionalInterface
 interface InterfaceC {public boolean equals(Object o);int breed(int x);int calculate(int x, int y);}@FunctionalInterface
 interface InterfaceD {int breed(int x);}@FunctionalInterface
 interface InterfaceE {public boolean equals(int i);int breed(int x);}interface InterfaceA {
 int GERM = 13;public default int getGERM() { return GERM; }}interface InterfaceB {
 int GERM = 13;public default int getGERM() { return get(); }private int get() { return GERM; }public boolean equals(Object o);int breed(int x);}
Explanation/Reference:Q35. Given:After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the values array is partially sorted?
 after line 8
 after line 6
 after line 5
 after line 10
Q36. Given:Which two are secure serialization of these objects? (Choose two.)
 Define the serialPersistentFields array field.
 Declare fields transient.
 Implement only readResolve to replace the instance with a serial proxy and not writeReplace.
 Make the class abstract.
 Implement only writeReplace to replace the instance with a serial proxy and not readResolve.
Q37. Given:Which three actions implement Java SE security guidelines? (Choose three.)
 Change line 7 to return names.clone();.
 Change line 4 to this.names = names.clone();.
 Change the getNames() method name to get$Names().
 Change line 6 to public synchronized String[] getNames() {.
 Change line 2 to private final String[] names;.
 Change line 3 to private Secret(String[] names) {.
 Change line 2 to protected volatile String[] names;.
Q38. Consider this method declaration:A) “SET SESSION AUTHORIZATION ” + userB) “SET SESSION AUTHORIZATION ” + stmt.enquoteIdentifier(user)Is A or B the correct replacement for <EXPRESSION> and why?
 A, because it sends exactly the value of user provided by the calling code.
 B, because enquoting values provided by the calling code prevents SQL injection.
 A and B are functionally equivalent.
 A, because it is unnecessary to enclose identifiers in quotes.
 B, because all values provided by the calling code should be enquoted.
Q39. Given:What is the result?
 Good Morning, Potter
 Good Night, Potter
 Good Morning, Harry
 Good Night, Harry
Q40. You are working on a functional bug in a tool used by your development organization. In your investigation, you find that the tool is executed with a security policy file containing this grant.What action should you take?
 Nothing, because it is an internal tool and not exposed to the public.
 Remove the grant because it is excessive.
 Nothing, because it is not related to the bug you are investigating.
 File a security bug against the tool referencing the excessive permission granted.
 Nothing, because listing just the required permissions would be an ongoing maintenance challenge.
Q41. Given the code fragment:What change on line 1 will make this code compile?
 Add catch (L |N e).
 Add catch (L |M N e).
 Add catch (L e).
 Add catch (N | L | M e).
 Add catch (M |L e).
Q42. Why does this compilation fail?
 The method Y. print (object) does not call the method super.print (object)
 The method x. print (object) is not accessible to Y.
 In method x. print (Collection), system. Out :: prints is an invalid Java identifier.
 The method print (object) and the method print (object…) are duplicates of each other.
 The method Y. print (object…) cannot override the final method x.print (object….).
Q43. Given:What is the correct definition of the JsonField annotation that makes the Point class compile?A)B)C)
 Option A
 Option B
 Option C
Q44. Given the formula to calculate a monthly mortgage payment:and these declarations:How can you code the formula?
 m = p * (r * Math.pow(1 + r, n) / (Math.pow(1 + r, n) – 1));
 m = p * ((r * Math.pow(1 + r, n) / (Math.pow(1 + r, n)) – 1));
 m = p * r * Math.pow(1 + r, n) / Math.pow(1 + r, n) – 1;
 m = p * (r * Math.pow(1 + r, n) / Math.pow(1 + r, n) – 1);
Q45. Which code fragment prints 100 random numbers?
 Option A
 Option B
 Option C
 Option D
Q46. Given:What is the result?
 Map: 0 Keys: 0 Values: 0
 The compilation fails.
 Map: 4 Keys: 4 Values: 4
 Map: 4 Keys: 0 Values: 0
 Map: 0 Keys: 4 Values: 4
Q47. Given:What is the result?
 3 5 3 3
 3 3 3 3
 3 5 3 5
 5 5 3 3
Q48. Given:Which is true?
 System.out is the standard output stream. The stream is open only when System.out is called.
 System.in cannot reassign the other stream.
 System.out is an instance of java.io.OutputStream by default.
 System.in is the standard input stream. The stream is already open.
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