Oracle New 2022 1Z0-819 Sample Questions Reliable 1Z0-819 Test Engine [Q122-Q137]

Oracle New 2022 1Z0-819 Sample Questions Reliable 1Z0-819 Test Engine

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• Java SE 11 Developer Exam provides practical experience to candidates from all the aspects to be a proficient worker in the organization
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Exam Topic for Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in ORACLE 1Z0-006 exam dumps:

• Java I/O API
• Java Platform Module System
• Java Object-Oriented Approach
• Working with Arrays and Collections

NO.122 Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?

 The compilation fails because there is no zero args constructor defined in class X.

 The compilation fails because either class X or class Y needs to implement the toString() method.

 The compilation fails because a final class cannot extend another class.

 The compilation succeeds.

NO.123 Given:

Which one is correct?

 An IllegalThreadStateException is thrown at run time.

 Three threads are created.

 The compilation fails.

 Four threads are created.

NO.124 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.

NO.125 Given:

What is the result?

 Take extra care

 The program prints nothing.

 Take extra care
Take extra care

 An exception is thrown at runtime

NO.126 Which is a proper JDBC URL?

 jdbe.mysql.com://localhost:3306/database

 http://localhost.mysql.com:3306/database

 http://localhost
mysql.jdbc:3306/database

 jdbc:mysql://localhost:3306/database

NO.127 Given:

What is the result?

 The compilation fails.

 abdf

 abd

 adf

 abcd

NO.128 Given:

What is the result?

 2134

 234

 2341

 214

NO.129 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;
}

NO.130 Given the Person class with age and name along with getter and setter methods, and this code fragment:

What will be the result?

 Aman Tom Peter

 Tom Aman Peter

 Aman Peter Tom

 Tom Peter Aman

NO.131 Given the Customer table structure:
* ID Number Primary Key
* NAME Text Nullable
Given code fragment:

Which statement inserted on line 14 sets NAME column to a NULL value?

 Stmt.setNull(2, java,sql. Types, VARCHAR);

 Stmt.setNull(2 string, class);

 Stmt.setNull(2, null);

 Stmt.setNull(2, java.lang, string);

NO.132 Given the Person class with age and name along with getter and setter methods, and this code fragment:

What will be the result?

 Aman Tom Peter

 Tom Aman Peter

 Aman Peter Tom

 Tom Peter Aman

NO.133 Given:

And the command:
java Main Helloworld
What is the result ?

 Input: Echo:

 Input: Helloworld Echo: Helloworld

 Input:
Then block until any input comes from System.in.

 Input:
Echo: Helloworld

 A NullPointerException is thrown at run time.

NO.134 Given the code fragment:

What is the result?

 13 5 7 9

 1 3 5 7 9 11

 2 4 6 B 10

 2 4 6 8

NO.135 Which is a proper JDBC URL?

 jdbe.mysql.com://localhost:3306/database

 http://localhost.mysql.com:3306/database

 http://localhost mysql.jdbc:3306/database

 jdbc:mysql://localhost:3306/database

NO.136 Given:

What is required to make the Foo class thread safe?

 No change is required.

 Make the declaration of lock static.

 Replace the lock constructor call with new ReentrantLock (true).

 Move the declaration of lock inside the foo method.

NO.137 Given:

What is the result?

 It throws a runtime exception.

 Value of Euler = 2.71828

 The code does not compile.

 Value of Euler = “2.71828”

 Loading …

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:

• Read and write console and file data using I/O Streams
• Connect to and perform database SQL operations, process query results using JDBC API
  Annotations
• Declare, use, and expose modules, including the use of services
• Create, apply, and process annotations
• Initialize objects and their members using instance and static initialiser statements and constructors
• Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
• Define and use fields and methods, including instance, static and overloaded methods
• Utilize polymorphism and casting to call methods, differentiate object type versus reference type

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