Replace 1Z0-819 Free Practice Questions For Java SE 11 Developer Certification

NEW QUESTION 1
Given:

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

• A. public abstract void methodB();
• B. final void methodG(){System.out.println(“G”);}
• C. private abstract void methodC();
• D. public String methodD();
• E. public int x;
• F. final void methodE();
• G. public void methodF(){System.out.println(“F”);}

Answer: AD

NEW QUESTION 2
A company has an existing sales application using a Java 8 jar file containing packages: com.company.customer;
com.company.customer.orders; com.company.customer.info; com.company.sales;
com.company.sales.leads; com.company.sales.closed; com.company.orders; com.company.orders.pending; com.company.orders.shipped.
To modularize this jar file into three modules, customer, sales, and orders, which module-info.java would be correct?
A)

B)

C)

D)

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: C

NEW QUESTION 3
Given:

When is the readObject method called?

• A. before this object is deserialized
• B. after this object is deserialized
• C. before this object Is serialized
• D. The method is never called.
• E. after this object is serialized

Answer: B

NEW QUESTION 4
Given:

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

• A. Change Line 1 to an abstract class:public abstract class API {
• B. Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;
• C. Change Line 1 to a class:public class API {
• D. Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {
• E. Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;

Answer: CE

NEW QUESTION 5
Which three annotation uses are valid? (Choose three.)

• A. Function<String, String> func = (@NonNull x) > x.toUpperCase();
• B. var v = “Hello” + (@Interned) “World”
• C. Function<String, String> func = (var @NonNull x) > x.toUpperCase();
• D. Function<String, String> func = (@NonNull var x) > x.toUpperCase();
• E. var myString = (@NonNull String) str;
• F. var obj = new @Interned MyObject();

Answer: ACF

NEW QUESTION 6
Which is the correct order of possible statements in the structure of a Java class file?

• A. class, package, import
• B. package, import, class
• C. import, package, class
• D. package, class, import
• E. import, class, package

Answer: B

NEW QUESTION 7
Which code fragment compiles?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: D

Explanation:

NEW QUESTION 8
Given:
/code/a/Test.java containing:

and
/code/b/Best.java containing: package b;
public class Best { }
Which is the valid way to generate bytecode for all classes?

• A. java /code/a/Test.java
• B. javac –d /code /code/a/Test
• C. java /code/a/Test.java /code/b/Best.java
• D. java –cp /code a.Test
• E. javac –d /code /code/a/Test.java /code/b/Best.java
• F. javac –d /code /code/a/Test.java

Answer: E

NEW QUESTION 9
Given:

and

Which code fragment on line 1 makes the s1 set contain the names of all employees born before January 1, 1989?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: B

NEW QUESTION 10
Given:

What is the result?

• A. 2,34,34,5
• B. 2,34,54,5
• C. 2,54,54,5
• D. 2,34,54,3

Answer: C

Explanation:

NEW QUESTION 11
Given:

executed with this command: java Main one two three What is the result?

• A. 0). one
• B. 0). one1). two2). three
• C. The compilation fails.
• D. It creates an infinite loop printing:0). one1). two1). two...
• E. A java.lang.NullPointerException is thrown.

Answer: D

NEW QUESTION 12
Given:

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

• A. Configuration is OK
• B. The compilation fails.
• C. Exception in thread "main" java.lang.Error:Fatal Error: Configuration File, App.config, is missing.
• D. nothing

Answer: B

Explanation:

NEW QUESTION 13
Given:

Which three actions implement Java SE security guidelines? (Choose three.)

• A. Change line 7 to return names.clone();.
• B. Change line 4 to this.names = names.clone();.
• C. Change the getNames() method name to get$Names().
• D. Change line 6 to public synchronized String[] getNames() {.
• E. Change line 2 to private final String[] names;.
• F. Change line 3 to private Secret(String[] names) {.
• G. Change line 2 to protected volatile String[] names;.

Answer: EFG

NEW QUESTION 14
Given:

What is the result?

• A. 2134
• B. 2143
• C. 214
• D. 234

Answer: C

Explanation:

NEW QUESTION 15
Given:

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

• A. protected void walk(){}
• B. void walk(){}
• C. abstract void walk();
• D. private void walk(){}
• E. public abstract void walk();

Answer: AE

NEW QUESTION 16
Given:

Which statement is true?

• A. Class Tester does not need to import java.time.LocalDate because it is already visible to members of the package test.
• B. All classes from the package java.tim
• C. are loaded for the class Diary.
• D. Only LocalDate class from java.time package is loaded.
• E. Tester must import java.time.LocalDate in order to compile.

Answer: A

NEW QUESTION 17
Given:

What is the result?

• A. The compilation fails at line 9.
• B. The compilation fails at line 2.
• C. Hello World
• D. The compilation fails at line 8.

Answer: C

Explanation:

NEW QUESTION 18
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