What you'll learn

Sample Oracle Certified Professional Exam Questions and Answers with solutions

Java programming language

Java SE 21

Essential Java basics

What Java is and how it works

Programming fundamentals with Java

Java Development Kit - JDK

Java Runtime Environment – JRE

Java Virtual Machine - JVM

All concepts of Object-Oriented Programming (core java programming)

How to use 'static' keyword and 'nested and inner' classes

Super Classes and Sub Classes

Strings

Wrapper Classes

Throw vs Throws

Exceptions

Enum Types and more

Arrays

Collections

Lambda Expression

Stream API

Date and Time

Java Input/Output (Java I/O)

Concurrency

Requirements

No prior knowledge is required about Java 21 and Java SE 21 Developer Certified Professional 1Z0-830 Exam

Basic Computer Knowledge

Desire to learn Java and Java Core Skills

A computer with a 64-bit operating system

We preferred MacOS (64-bit) but this is not mandatory. You can prefer to use other Operating Systems. We also provided specific videos on installations for each platform

We preferred IntelliJ which is a powerful and advanced text editor with a lot of plug-ins and tools

Nothing else! It's just you, your computer, and your ambition to get started today

Description

Hello there,Welcome to the "Java SE 21 Developer | Oracle Certified Professional 1Z0-830" course.Oracle 1Z0-830 | Java SE 21 Developer Certification Exam Prep Course with Lambda Expression & Java Collections FrameworkThe Oracle Certified Professional: Java SE 21 Developer (Exam 1Z0-830) is a globally recognized certification that validates your expertise in Java programming, object-oriented principles, and modern Java development practices. This certification is highly valued by employers and serves as proof of your proficiency in Java, one of the most in-demand programming languages in the world.In this course, we aimed to make you a good Java developer and pass the exam required for Oracle Certified Professional: Java SE 21 Developer Certification (Exam number 1Z0-830).You may have taken many Java courses so far, but the exams you will take to get Java certificates to require you to know many tips and exam tactics, apart from Java knowledge. Therefore, being a perfect Java developer is not enough to get a passing grade on the exam.So why should you become a Java SE 21 Developer? Because if you want to apply for a Java developer job, having a certificate will put you one step ahead of other candidates. Remember that a certified developer is always preferable to a non-certified developer.In this course, you'll learn Java from scratch, along with essential exam tactics, tips, and practice questions. You'll also work on 8 real-world projects and complete 50+ coding exercises to reinforce your learning.By the end of the course, you'll be fully prepared to tackle the Oracle Certified Java SE 21 Developer Exam and advance your career with confidence!In this course you will learn;What is Oracle Certified Professional: Java SE 21 Developer Professional Exam 1Z0-830,What Java is and how it works,Programming Fundamentals with Java,IntelliJ IDEAJava Development Kit - JDK,Java Runtime Environment – JRE,Java Virtual Machine - JVMAll Concepts of Object-Oriented ProgrammingVariables and Data Types,Arrays,Control Flow Statements,Methods,Collections,Strings,Wrapper Classes,Exceptions,Enum Types and more,Lambda Expression,Stream API,Date and Time,Java Input/Output,ConcurrencyNo Previous Knowledge is needed!This course will take you from a beginner to a more experienced level.This Java course starts with absolute beginner core concepts, such as showing you the free tools you need to download and install, and takes you all the way to mastering the skills required for the Oracle Certified Professional: Java SE 21 Developer certification. You will gradually learn core Java skills through hands-on examples, building your knowledge step by step. If you're already in the field and need a refresher, this course will also serve as a valuable guide. Every time you return to this course, you will learn something new or improve your existing skills, getting you one step closer to passing the Java SE 21 certification exam.What is Java?Java is a programming language and platform initially developed by Sun Microsystems and now owned by Oracle. Java is inspired by C and C++ and uses an object-oriented programming model, which means that concepts or things are represented as "objects" that have data fields and methods. One of the biggest advantages of Java is that it runs on a Java Virtual Machine (JVM), meaning that you can execute Java code on any platform that has a JVM, without re-compilation. This is different from C and C++, which require re-compilation for every hardware platform you execute the code on. Java has many other advantages, including automatic memory management. This eliminates hard-to-understand pointers used in languages like C, which can help Java developers write better code in a shorter period of time.What does it mean that Java is an object-oriented programming language?Java is an object-oriented programming (OOP) language, which means concepts or things are represented as "objects" that have data fields and methods. In object-oriented programming, models called "objects" represent either a programming entity or an abstract concept. These objects are created and assembled independently of one another but can work with each other in logical ways. Objects are manifestations of classes and can inherit code allowing for code re-use, which can drastically reduce code duplication if used correctly. Additionally, encapsulation, another core OOP concept, allows you to create code with the implementation hidden. Although, in many cases, writing OOP code in Java (and other OOP languages) can take longer than using a procedural language, the benefits obtained with OOP, namely code reusability, encapsulation of data, and readability of code, often result in code that is easier to maintain in the long run.What is Java used for?Java is a very versatile language. Several fields use Java, including Android app development, desktop applications that work on many operating systems, server-side applications, and more. The virtual machine required to run Java programs has been ported to numerous operating systems allowing Java to run on virtually all hardware. According to the TIOBE index, Java has consistently been in the top 3 most-used and popular languages since its initial release in the 1990s. Many developers still consider Java the language of choice in areas such as enterprise and application servers, and even in embedded systems development. Many Fortune 500 companies rely on Java to run their core systems and employers often view Java experience on a résumé as favorable due to its popularity.What certification is best for Java?Oracle, the owner of the Java programming language, has the Oracle Certified Developer: Java SE 21 Developer program, which is easily the best certification to obtain for Java developers. The main reason why it's the best certification, is, unlike most other certifications for Java, the Oracle certification is both well known and universally accepted by employers all over the world. The exam is challenging. You also must bring an ID with you to the exam, so you cannot get anyone to take it for you. Certification is really valuable for both the certification holder and for future employers. There are few, if any, other certification programs so universally accepted as Oracle's Java certification. Thus, getting Java certification is one of the surest ways to give yourself an advantage over other job seekers in the marketplace.Why would you want to take this course?Our answer is simple: The quality of teachingOAK Academy based in London is an online education company OAK Academy gives education in the field of IT, Software, Design, development in Turkish, English, Portuguese, and a lot of different language on Udemy platform where it has over 2000 hours of video education lessons. When you enroll, you will feel the OAK Academy`s seasoned developers' expertiseVideo and Audio Production QualityAll our content is created/produced as high-quality video/audio to provide you the best learning experienceYou will be,Seeing clearlyHearing clearlyMoving through the course without distractionsYou'll also get:Lifetime Access to The CourseFast & Friendly Support in the Q&A sectionUdemy Certificate of Completion Ready for DownloadWe offer full support, answering any questionsDive in now into the "Java SE 21 Developer | Oracle Certified Professional 1Z0-830" course.

Overview

Section 1: Introduction to Java SE 21 Developer Certification Course

Lecture 1 What Will We Learn In This Course?

Section 2: Introduction to Java and Environment Setup

Lecture 2 Section Overview

Lecture 3 Some Information about Java SE 21 Developer Certified Professional 1Z0-830 Exam

Lecture 4 Basic Programming Terms

Lecture 5 Getting Started With Java?

Lecture 6 Download and Install Java on Windows

Lecture 7 Download and Install Java on MacOS

Lecture 8 What is IDE?

Lecture 9 Download and Install IntelliJ on Windows

Lecture 10 Download and Install IntelliJ on MacOS

Lecture 11 First Java Program - Hello World

Lecture 12 Compiling and Running Applications

Lecture 13 Closer Look at the First Java Program

Section 3: Basics of Java

Lecture 14 Section Overview

Lecture 15 Basic Output in Java

Lecture 16 Basic Input in Java

Lecture 17 Comments in Java

Lecture 18 Variables

Lecture 19 Data Types

Lecture 20 Numbers in Java

Lecture 21 Type Conversion and Type Casting

Section 4: Operators

Lecture 22 Section Overview

Lecture 23 Arithmetic Operators

Lecture 24 Assignment Operators

Lecture 25 Unary Operators

Lecture 26 Equality and Relational Operators

Lecture 27 Conditional Operators

Lecture 28 Bitwise and Bitshift Operators

Lecture 29 Char Data Type

Lecture 30 Operator Precedence

Lecture 31 Expressions, Statements, and Blocks

Section 5: Array

Lecture 32 Introduction to Array

Lecture 33 Sorting Array

Lecture 34 Searching Array

Lecture 35 Multi-dimensional Arrays

Section 6: Control Flow Statements

Lecture 36 If and If-Else Statement

Lecture 37 Ternary Operator

Lecture 38 If-Else - If Ladder Statement, Nested If Statement

Lecture 39 Switch-Case Statement

Lecture 40 Simple Calculator App with Switch Statement

Lecture 41 For Loops

Lecture 42 Enhanced For Loop (For-Each Loop)

Lecture 43 While Loop

Lecture 44 Infinite Loop

Lecture 45 Do - While Loop

Lecture 46 Break Keyword

Lecture 47 Continue Keyword

Lecture 48 Return Keyword

Lecture 49 Labeled Loops

Lecture 50 Fibonacci Series

Section 7: Methods

Lecture 51 Section Overview

Lecture 52 What is Method?

Lecture 53 Method Calling

Lecture 54 Types of Methods

Lecture 55 Java Variable Arguments (Java Var-Args)

Lecture 56 Method Overloading

Lecture 57 Find Exponential Number

Section 8: Java Object-Oriented Concept

Lecture 58 Section Overview

Lecture 59 OOP Concept, Object & Class

Lecture 60 Stack & Heap

Lecture 61 Access Modifiers

Lecture 62 Naming Conventions

Lecture 63 Constructor

Lecture 64 Packages and Import - Part 1

Lecture 65 Packages and Import - Part 2

Lecture 66 "static" Keyword

Lecture 67 Static import

Lecture 68 Nested & Inner Classes

Lecture 69 Local inner classes

Section 9: Java Object-Oriented Programming

Lecture 70 Section Overview

Lecture 71 Inheritance

Lecture 72 Sealed Class

Lecture 73 Method Overriding

Lecture 74 "super" and "this" Keywords - Part 1

Lecture 75 "super" and "this" Keywords - Part 2

Lecture 76 "super" and "this" Keywords - Part 3

Lecture 77 "final" Keyword

Lecture 78 "abstract" Keyword

Lecture 79 Interface

Lecture 80 Polymorphism

Lecture 81 Encapsulation

Lecture 82 Anonymous Class

Lecture 83 Record Class

Lecture 84 "var" Keyword

Section 10: Wrapper Classes, Auto-Boxing and Unboxing

Lecture 85 Introduction to Wrapper Class in Java

Lecture 86 Conversion of Types

Lecture 87 Autoboxing - UnBoxing

Section 11: Strings

Lecture 88 Section Overview

Lecture 89 What is String?

Lecture 90 Equality of Strings

Lecture 91 Immutability of Strings

Lecture 92 Useful Methods of String - Part 1

Lecture 93 Useful Methods of String - Part 2

Lecture 94 StringBuffer Class

Lecture 95 StringBuilder Class

Lecture 96 String vs String Buffer vs String Builder

Lecture 97 Reverse String

Section 12: Collections

Lecture 98 Section Overview

Lecture 99 Introduction to Collections

Lecture 100 List Interface

Lecture 101 ArrayList Class

Lecture 102 Conversion Between Lists and Arrays

Lecture 103 Sorting Array List

Lecture 104 Comparator

Lecture 105 Searching ArrayList

Lecture 106 Itrator and ListIterator

Lecture 107 Set Interface - Part 1

Lecture 108 Set Interface - Part 2

Lecture 109 Queue

Lecture 110 Deque

Lecture 111 Map Interface - Part 1

Lecture 112 Map Interface - Part 2

Section 13: Exception Handling in Java

Lecture 113 Intro to Exception

Lecture 114 Error vs Exception

Lecture 115 Exception Types

Lecture 116 Try – Catch Block

Lecture 117 "finally" Block

Lecture 118 "throw" Keyword

Lecture 119 "throws" Keyword

Lecture 120 "throw" vs "throws"

Lecture 121 Useful Methods of Throwable Class

Lecture 122 Bank Account Balance

Section 14: Enum Types

Lecture 123 Enum Types

Lecture 124 Traffic Lights Program With Enum

Section 15: Lambda Expression

Lecture 125 Section Overview

Lecture 126 Marker and Functional Interfaces

Lecture 127 Lambda Expression

Lecture 128 Predicate

Lecture 129 Method Reference

Lecture 130 Switch Expression (Enhanced Switch Statement)

Lecture 131 Simple Calculator app with Lambda

Section 16: Stream API

Lecture 132 Introduction to Stream

Lecture 133 Reduction Operations - Part 1

Lecture 134 Reduction Operations - Part 2

Lecture 135 Parallelism and Parallel Stream

Section 17: Date&Time

Lecture 136 Section Overview

Lecture 137 Calendar Class

Lecture 138 Local Date Class

Lecture 139 Local Time Class

Lecture 140 Local Date Time Class

Lecture 141 Period Class

Lecture 142 Date Time Formatting (DateTimeFormatter Class)

Section 18: Java IO (Java Input / Output)

Lecture 143 Section Overview

Lecture 144 Introduction to Java I/O

Lecture 145 OutputStream Class

Lecture 146 InputStream Class - Part 1

Lecture 147 InputStream Class - Part 2

Lecture 148 Writer Class

Lecture 149 Reader Class

Lecture 150 Copying a file with Java IO

Lecture 151 Object Serialization and Deserialization

Lecture 152 transient keyword

Section 19: Overview of Threads

Lecture 153 What is Thread?

Lecture 154 Create Thread Class

Lecture 155 Create Runnable Class

Section 20: Thread Creation and Management

Lecture 156 Thread and Processes

Lecture 157 Thread management

Lecture 158 Thread states and monitoring

Section 21: Synchronization and Concurrency Control

Lecture 159 Introduction to Synchronization

Lecture 160 "synchronized" Keyword

Lecture 161 "volatile" Keyword

Section 22: High-level Concurrency APIs

Lecture 162 Introduction to Concurrency APIs

Lecture 163 Executor Service

Lecture 164 Scheduled Executor Service

Lecture 165 Concurrent Collection

Lecture 166 Future and Callable

Lecture 167 Atomic Variables

Section 23: Thread Coordination

Lecture 168 Introduction to Thread Coordination

Lecture 169 Inter-thread communication

Lecture 170 Locks and Conditions

Section 24: Locks and Advanced Synchronization

Lecture 171 ReentrantLock and ReentrantReadWriteLock

Lecture 172 Condition variables

Section 25: Concurrent Collections

Lecture 173 Thread-safe collections

Lecture 174 Blocking queues

Section 26: Performance and Scalability

Lecture 175 Thread contention and deadlocks

Lecture 176 Thread safety and immutability

Lecture 177 Optimizing Thread Pools

Lecture 178 Parallel stream

Section 27: Java Virtual Machine and Threads

Lecture 179 JVM's role in thread management

Lecture 180 Thread priorities

Lecture 181 Daemon threads

Section 28: Best Practices and Advanced Topics

Lecture 182 Concurrency Design Patterns

Lecture 183 Handling exceptions in threads

Lecture 184 Advanced locking mechanisms

Section 29: Case Studies and Practical Scenarios

Lecture 185 Building a multithreaded web server

Lecture 186 Implementing a producer-consumer system

Lecture 187 Developing a real-time chat system

Section 30: Tools and Testing

Lecture 188 Thread debugging tools

Lecture 189 Unit testing multithreaded code

Lecture 190 Profiling multithreaded applications

Section 31: Extra

Lecture 191 Java SE 21 Developer | Oracle Certified Professional 1Z0-830

Anyone looking to pass the Java SE 21 Developer Certified Professional 1Z0-830 Exam,Anyone looking to get Oracle Java Certification,Those who want to learn the Java Programming language from scratch,Those who want to be one step ahead in job applications related to Java,Java developers who want to increase their knowledge,Beginners with no previous coding experience in Java programming,Those who want to learn tips and tricks in Java SE 21 Developer Certified Professional 1Z0-830 Exam,Programmers who are looking to sharpen their Java programming skills to the expert level,Anyone who is planning job transformation and wants to become a Java developer