[Nov 03, 2023] Free Oracle 1Z0-819 Exam Questions & Answer [Q49-Q67]

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[Nov 03, 2023] Free Oracle 1Z0-819 Exam Questions and Answer

Verified 1Z0-819 dumps Q&As Latest 1Z0-819 Download

Oracle 1z1-819 exam is an essential certification exam for Java developers who want to validate their skills and knowledge in Java SE 11. 1Z0-819 exam is designed to test the candidate’s proficiency in developing Java applications using Java SE 11. Java SE 11 Developer certification also proves the candidate’s ability to work with Java tools, technologies, and libraries.

Q49. Given:

What must be added in line 1 to compile this class?

catch(IOException e) { }

catch(FileNotFoundException | IndexOutOfBoundsException e) { }

catch(FileNotFoundException | IOException e) { }

catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }

catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }

Q50. Given:

What is the result?

compilation error

0 5

6 13

5 12

Q51. Given:

Which would cause s to be AQCD?

s.replace(s.indexOf(“A”), s.indexOf(“C”), “Q”);

s.replace(s.indexOf(“B”), s.indexOf(“C”), “Q”);

s.replace(s.indexOf(“B”), s.indexOf(“B”), “Q”);

s.replace(s.indexOf(“A”), s.indexOf(“B”), “Q”);

Q52. Given:

Which two allow a.Main to allocate a new Person? (Choose two.)

In Line 1, change the access modifier to privateprivate Person() {

In Line 1, change the access modifier to publicpublic Person() {

In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();

In Line 2, change the access modifier to protectedprotected class Main {

In Line 1, remove the access modifierPerson() {

Q53. Given the code fragment:

What is the result?

-1

-3

Q54. Given:

Which two statements are true if the method is added to Bar? (Choose two.)

public Collection<String> foo(Collection<String> arg) { … } overrides Foo.foo.

public <T> Collection<T> foo(Stream<T> arg) { … } overloads Foo.foo.

public <T> List<T> foo(Collection<T> arg) { … } overrides Foo.foo.

public <T> Collection<T> foo(Collection<T> arg) { … } overloads Foo.foo.

public <T> Collection<T> bar(Collection<T> arg) { … } overloads Foo.foo.

public <T> Iterable<T> foo(Collection<T> arg) { … } overrides Foo.foo.

Q55. Given:

What prevents this code from compiling?

The calculateSurfaceAreamethod within Cylinder must be declared default.

Cylinderis not properly calling the Rectangle and Ellipseinterfaces’ calculateSurfaceArea methods.

Cylinderrequires an implementation of calculateSurfaceAreawith two parameters.

The calculateSurfaceAreamethod within Rectangle and Ellipserequires a publicaccess modifier.

Q56. 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()

Q57. Given:

What is the result?

[0,0] = Red[0,1] = White[1,0] = Black[1,1] = Blue[2,0] = Yellow[2,1] = Green[3,0] = Violet

[0,0] = Red[1,0] = Black[2,0] = Blue

java.lang.ArrayIndexOutOfBoundsException thrown

[0,0] = Red[0,1] = White[1,0] = Black[2,0] = Blue[2,1] = Yellow[2,2] = Green[2,3] = Violet

Q58. 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….).

Q59. Given:

What is the output?

null

A NoSuchElementException is thrown at run time.

Duke

A NullPointerException is thrown at run time.

Q60. Given:

What is the result?

Orange Juice

The compilation fails.

Orange Juice Apple Pie Lemmon Ice Raspberry Tart

The program prints nothing.

Q61. Given:

Which statement is true?

Class Tester does not need to import java.time.LocalDate because it is already visible to members of the package test.

All classes from the package java.time. are loaded for the class Diary.

Only LocalDate class from java.time package is loaded.

Tester must import java.time.LocalDate in order to compile.

Q62. Examine this excerpt from the declaration of the java.se module:

What does the transitive modifier mean?

Only a module that requires the java.se module is permitted to require the java.sql module.

Any module that requires the java.se module does not need to require the java.sql module.

Any module that attempts to require the java.se module actually requires the java.sql module instead.

Any module that requires the java.sql module does not need to require the java.se module.

Q63. Which two statements are true about the modular JDK? (Choose two.)

The foundational APIs of the Java SE Platform are found in the java.base module.

An application must be structured as modules in order to run on the modular JDK.

It is possible but undesirable to configure modules’ exports from the command line.

APIs are deprecated more aggressively because the JDK has been modularized.

Q64. Given:

What is the output?

1 2 [1, 2, 3, four] 3 four

1 2 [1, 2, 3, 4] 3 4

1 2 [1, 2, 3, 4] 3 four

1 2 [1, 2, 3, four] 3 4

Q65. Which module-info.java is correct for a service provider for a print service defined in the PrintServiceAPI module?
module PrintServiceProvider {

requires PrintServiceAPI;
exports org.printservice.spi;
}
module PrintServiceProvider {

requires PrintServiceAPI;
provides org.printservice.spi.Print with
com.provider.PrintService;
}
module PrintServiceProvider {

requires PrintServiceAPI;
uses com.provider.PrintService;
}
module PrintServiceProvider {

requires PrintServiceAPI;
exports org.printservice.spi.Print with
com.provider.PrintService;
}

Q66. Given:

Which annotation should be used to remove warnings from compilation?