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:
Practice Exam info:
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
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
Localization
Implement Localization using Locale, resource bundles, and Java APIs to parse and format messages, dates, and numbers
Annotations
