OCP Java SE 11 Developer 1Z0-819 Practice Exams

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%

Real exam experience

Questions with a complete explanation

Format:Multiple Choice

Number of Questions:2 practice tests, 50 questions each

Duration:90 minutes

Passing score: 68%

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

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

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

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

Create and use custom exceptions

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

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

Deploy and execute modular applications, including automatic modules

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

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

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

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

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

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

Create, apply, and process annotations