08 May, 2021

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Total 175 questions Full Exam Access

Question 1

Assuming the Widget class has a getPrice method, this code does not compile:
1Z0-819 dumps exhibit

Which two statements, independently, would allow this code to compile? (Choose two.)

Replace line 5 with widgetStream.filter(a > ((Widget)a).getPrice() > 20.00).

Replace line 1 with List<Widget> widgetStream = widgets.stream();.

Replace line 5 with widgetStream.filter((Widget a) > a.getPrice() > 20.00).

Replace line 4 with Stream<Widget> widgetStream = widgets.stream();.

Question 2

Given:

Which loop incurs a compile time error?

the loop starting line 11

the loop starting line 7

the loop starting line 14

the loop starting line 3

Question 3

Given the code fragment:
1Z0-819 dumps exhibit

What is the result?

ab cd ef

An ArrayIndexOutOfBoundsException is thrown at runtime.

The compilation fails.

abc def

ad be cf

Question 4

Given:

Which three classes successfully override printOne()? (Choose three.)
1Z0-819 dumps exhibit

Option A

Option B

Option C

Option D

Option E

Option F

Question 5

Which two statements are correct about try blocks? (Choose two.)

A try block can have more than one catch block.

A finally block in a try-with-resources statement executes before the resources declared are closed.

A finally block must be immediately placed after the try or catch blocks.

A try block must have a catch block and a finally block.

catch blocks must be ordered from generic to specific exception types.

Question 6

Given:

Which two changes need to be made to make this class compile? (Choose two.)

Change Line 1 to an abstract class:public abstract class API {

Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;

Change Line 1 to a class:public class API {

Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {

Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;

Question 7

Which describes a characteristic of setting up the Java development environment?

Setting up the Java development environment requires that you also install the JRE.

The Java development environment is set up for all operating systems by default.

You set up the Java development environment for a specific operating system when you install the JDK.

Setting up the Java development environment occurs when you install an IDE before the JDK.

Question 8

Given:

executed using this command: java Myclass My Car is red What is the output of this class?

Car--red--My

My--Car--is

My--is--java

java--Myclass--My

Myclass--Car--red

Question 9

Given:

When run and all three files exist, what is the state of each reader on Line 1?

All three readers are still open.

All three readers have been closed.

The compilation fails.

Only reader1 has been closed.

Question 10

Given:

executed using command:
java Hello “Hello World” Hello World What is the output?

An exception is thrown at runtime.

Hello WorldHello World

Hello World Hello World

Hello WorldHelloWorld

HelloHello WorldHelloWorld

Question 11

Which command line runs the main class com.acme.Main from the module com.example?

java --module-path mods com.example/com.acme.Main

java –classpath com.example.jar com.acme.Main

java --module-path mods -m com.example/com.acme.Main

java -classpath com.example.jar –m com.example/com.acme.Main

Question 12

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

Supplier

Predicate

Function

Consumer

Question 13

Given:

If file "App.config" is not found, what is the result?

Configuration is OK

The compilation fails.

Exception in thread "main" java.lang.Error:Fatal Error: Configuration File, App.config, is missing.

nothing

Question 14

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.tim

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.

Question 15

Given:

Which two statements are valid to be written in this interface? (Choose two.)

public abstract void methodB();

final void methodG(){System.out.println(“G”);}

private abstract void methodC();

public String methodD();

public int x;

final void methodE();

public void methodF(){System.out.println(“F”);}

Question 16

Given:

What is the result?

The compilation fails due to an error in line 4.

The compilation fails due to an error in line 3.

The compilation fails due to an error in line 2.

The compilation fails due to an error in line 1.

The compilation fails due to an error in line 5.

Question 17

Which code fragment compiles?
1Z0-819 dumps exhibit

Option A

Option B

Option C

Option D

Question 18

Given:

What is the result?

watermelonorangelemongrapeapricotapple

nothing

appleapricotgrapelemonorangewatermelon

appleorangegrapelemonapricotwatermelon

Question 19

Given:

Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

protected void walk(){}

void walk(){}

abstract void walk();

private void walk(){}

public abstract void walk();

Question 20

Given:

Which is true?

The code compiles but does not print any result.

The code prints 25.

The code does not compile.

The code throws an exception at runtime.

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Total 175 questions Full Exam Access