OCP Java SE 11 Developer 1Z0-819 Practice Exams

About OCP Java SE 11 Developer 1Z0-819 Practice Exams

Become a Java Pro! I created this practice exam based on my personal experience taking the exam. There are only 100 questions here, but after you have passed them all, carefully read all the explanations, you can safely go to the exam and pass it successfully. There are no questions of the same type in these practice tests, as you need to understand the concepts presented here in order to successfully pass the exam.

Real Exam info:

_Exam number and titler:_

1Z0-819: Java SE 11 Developer

_Exam Price:_

$245

_Format:_

Multiple Choice

_Number of Questions:_

50

_Duration:_

90 minutes

_Passing score:_

68%

Practice Exam info:

_Real exam experience_

_Questions with a complete explanation_

_Format:_

Multiple Choice

_Number of Questions:_

2 practice tests, 50 questions each

_Duration:_

_Passing score:_

68% This practice exam covers all topics covered in the Java SE 11 Developer exam:

_Working with Java data types_

Use primitives and wrapper classes, including, operators, parentheses, type promotion, and casting

Handle text using String and StringBuilder classes

Use local variable type inference, including lambda parameters

_Controlling Program Flow_

Create and use loops, if/else, and switch statements

_Java Object-Oriented Approach_

Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)

Define and use fields and methods, including instance, static and overloaded methods

Initialize objects and their members using instance and static initializer statements and constructors

Understand variable scopes, apply encapsulation and make objects immutable

Create and use subclasses and superclasses, including abstract classes

Utilize polymorphism and casting to call methods, differentiate object type versus reference type

Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods

Create and use enumerations

_Exception Handling_

Handle exceptions using try/catch/finally clauses, try-with-resource, and multi-catch statements

Create and use custom exceptions

Working with Arrays and Collections

Use generics, including wildcards

Use a Java array and List, Set, Map, and Deque collections, including convenience methods

Sort collections and arrays using Comparator and Comparable interfaces

Working with Streams and Lambda expressions

Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package

Use Java Streams to filter, transform and process data

Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams

Java Platform Module System

Deploy and execute modular applications, including automatic modules

Declare, use, and expose modules, including the use of services

Concurrency

Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API

Develop thread-safe code, using different locking mechanisms and java.util.concurrent API

Java I/O API

Read and write console and file data using I/O Streams

Implement serialization and deserialization techniques on Java objects

Handle file system objects using java.nio.file API

Secure Coding in Java SE Application

Develop code that mitigates security threats such as denial of service, code injection, input validation and ensures data integrity

Secure resource access including filesystems, manage policies and execute privileged code

Database Applications with JDBC

Connect to and perform database SQL operations, process query results using JDBC API

Localization

Implement Localization using Locale, resource bundles, and Java APIs to parse and format messages, dates, and numbers

Annotations

Create, apply, and process annotations