[Dec-2023] 100% Guarantee Download 1z1-819 Exam Dumps PDF Q&A [Q54-Q68]

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[Dec-2023] 100% Guarantee Download 1z1-819 Exam Dumps PDF Q&A

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NO.54 Given this enum declaration:

Examine this code:
System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

public String toString() { return String.valueOf(ALPHA.v); }

public String toString() { return String.valueOf(Letter.values()[1]); }

public String toString() { return String.valueOf(v); }

String toString() { return “200”; }

NO.55 Which describes an aspect of Java that contributes to high performance?

Java prioritizes garbage collection.

Java has a library of built-in functions that can be used to enable pipeline burst execution.

Java monitors and optimizes code that is frequently executed.

Java automatically parallelizes code execution.

NO.56 Given:

What is the result?

WorkingUnknown

Unknown

TuesdayUnknown

The compilation fails.

Tuesday

Working

NO.57 Given:

Which code fragment on line 1 makes the m map contain the employee with the highest salary for each neighborhood?
A)

B)

C)

D)

Option A

Option B

Option C

Option D

NO.58 Given:

Which two interfaces can be used in lambda expressions? (Choose two.)

MyInterface1

MyInterface3

MyInterface5

MyInterface2

MyInterface4

NO.59 Given:

Which statement on line 1 enables this code fragment to compile?

Function function = String::toUpperCase;

UnaryOperator function = s -> s.toUpperCase();

UnaryOperator<String> function = String::toUpperCase;

Function<String> function = m -> m.toUpperCase();

NO.60 Given:

What is the result?

Good Morning, Potter

Good Night, Potter

Good Morning, Harry

Good Night, Harry

NO.61 Which three initialization statements are correct? (Choose three.)

int[][][] e = {{1,1,1},{2,2,2}};

short sh = (short)’A’;

float x = 1f;

byte b = 10;
char c = b;

String contact# = “(+2) (999) (232)”;

int x = 12_34;

boolean false = (4 != 4);

NO.62 Given:

Which option should you choose to enable the code to print Something happened?

Add extends GeneralException on line 1.
Add extends Exception on line 2.

Add extends SpecificException on line 1.
Add extends GeneralException on line 2.

Add extends Exception on line 1.
Add extends Exception on line 2.

Add extends Exception on line 1.
Add extends GeneralException on line 2.

NO.63 Given the code fragment:

What is the result?

ab cd ef

An ArrayIndexOutOfBoundsException is thrown at runtime.

The compilation fails.

abc def

ad be cf

NO.64 Given:
String originalPath = “data\projects\a-project\..\..\another-project”; Path path = Paths.get(originalPath); System.out.print(path.normalize()); What is the result?

dataanother-project

dataprojectsa-projectanother-project

data\projects\a-project\..\..\another-project

dataprojectsa-project….another-project

NO.65 There is a copyServiceAPI that has the org.copyservice. spi. Copy interface To use this service in a module, which module- info.java would be correct?
A)

B)

C)

D)

Option A

Option B

Option C

Option D

NO.66 Given:

What is the result?

nothing

It fails to compile.

A java.lang.IllegalArgumentException is thrown.

NO.67 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

NO.68 Given:

and

and

What is the result?

The program prints Process()called 2.

A java.lang.NoSuchMethodExceptionis thrown.

The program prints Process()called 1.

A java.lang.IllegalAccessExceptionis thrown.

The compilation fails.

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