Writing code that is easy to understand and maintain is crucial to the software development life cycle. Since Java is an object-oriented programming language, the code is already organized and grouped based on objects with properties and methods that are associated with each object. However, as a developer you still need to be cognizant of how you write your code. In this course, you'll learn how to distinguish between clean and messy code and the benefits writing clean code. You'll also learn best practices for adding comments to your code and how to fix messy code. Finally, you'll explore tools that can be used when writing and cleaning code. This course is one of a collection of courses that prepares learners for Oracle's 1Z0-811: Java Certified Foundations Associate certification.

Java provides different data types that can be used to store and work with different types of data. In this course, you'll learn about these data types and how to perform actions on them. First, you'll learn about the various Java data types and their properties. Next, you'll examine how to declare and initialize variables in Java and purpose of the final keyword. You'll then move on to explore data type casting and the concepts of widening and narrowing casting. Finally, you'll learn about the Java String data type and how it relates to the Java StringBuilder class. This course is one of a collection of courses that prepares learners for Oracle's 1Z0-811: Java Certified Foundations Associate certification.

One of the main components of modern programming languages is the ability to make decisions using the data provided to them. Java provides decision statements that can be used to make decisions and being able to make decisions is a fundamental part of the Java programming language. In this course, you'll learn about various types of Java decision statements. You'll examine how to use the if-then-else and switch statements. Then, you'll move on to learn about String comparisons, the comparison operator, the equals() method, and compareTo. You'll also learn about the strengths and weaknesses of each comparison operator and the best time to use each. This course is one of a collection of courses that prepares learners for Oracle's 1Z0-811: Java Certified Foundations Associate certification.

Learners can explore the differences between overloading, overriding, and hiding, as well as the differences between class inheritance and interface inheritance in this 11-video course. Examine checked and unchecked exceptions and errors, along with the characteristics of Modular JDK in Java SE 11. The course begins with a look at the concept and differences between overloading, overriding, and hiding, and then demonstrates how to create and implement interfaces. You will examine the differences between class inheritance and interface inheritance along with abstract classes. Explore how to declare List and ArrayList instances, and recognize how to use Lambda expressions in Java SE 11. Next, you will view the advantages of exception handling and differentiate between checked exception and unchecked exception and errors. Then move on to creating try-catch blocks and determining how exceptions alter program flow. You will also discover how to create and invoke a method that throws an exception, and in the final tutorial, explore the Modular JDK in Java SE 11. This is one course is a series to prepare for the 1Z0-816: Java SE 11 Programmer II certification exam.

In this 13-video course, explore Java SE 11 and its language enhancements, the Shebang mechanism, and key features. Discover how to create and run simple executable Java programs, as well as how to create, import, and manipulate packages and strings, and other key topics. Begin with a look at Java and the Java SE 11 enhancements. Learn to recognize the key features of Java programming language; create an executable Java program with a main class; and compile and run a Java program by using command-line interface (CLI). Next, learn how to create and import packages in Java 11; declare and initialize variables in Java 11; and identify the scope of a variable, and use local variable type inference. You will discover how to create and manipulate strings in Java 11, and transform a null or empty string into an empty optional. The final tutorial involves launching and executing Single-File Source-Code programs and illustrating the enhancements of Shebang mechanisms in Java 11. This is one course is a series to prepare for the 1Z0-816: Java SE 11 Programmer II certification exam.

In this 20-video course, learners will explore the concepts of Generics and Collections in Java, including different types of Generics, Collections framework, implementation of Adapter and Map interfaces, features of concurrent implementations, and custom collection development. Begin by creating and using interfaces with default methods, and interfaces with private methods. Examine Wrapper class in Java and its associated benefits and simplifying programs with Wrapper classes. Delve into concepts of auto-boxing and auto-unboxing, and managing objects with boxing and unboxing. Describe Generics, including different types and restrictions; create and use Generic classes and methods with diamond notation; and discover use of wild cards in Generic classes. Explore Collections framework and use of key Collection interfaces; use NavigableSet, and demonstrate the utility of ConcurrentMap and ConcurrentNavigableMap. Discover Adapter implementations on Collections; recognize essential implementations of Map interfaces in Java SE 11, and the prominent features of concurrent implementations; view custom collections and the Collections class; and implement algorithms by using the Collections class. Finally, learn to use marker interfaces in List implementations to improve Collection performance. This is one course is a series to prepare for the 1Z0-816: Java SE 11 Programmer II certification exam.

Explore data integrity guidelines, how to enable accessibility and extensibility in Java applications, and how to handle input validation and mutability in this 14-video course examining Java Cryptography Architecture (JCA), Engine classes provided by JCA, Provider class capabilities, and other topics. To begin, discover how to prevent Denial-of-Service in Java applications; secure confidential information in Java applications; and examine guidelines for data integrity, focusing on injections, inclusion, and input validation. Recall how to facilitate accessibility and extensibility in Java applications and how to properly handle input validation and mutability. Explore how to secure sensitive objects, and secure serialization and deserialization in Java. You will describe JCA, including its architecture and the principles surrounding it. Delve into Provider Architecture and capabilities of the Provider class; describe the Engine class and list the Engine classes available in JCA; and learn about key pair generation in Java SE 11. You will also learn about signature management and how to generate and verify signatures using generated keys, and finally, convert unsecure socket code to secure socket code. This is one course is a series to prepare for the 1Z0-816: Java SE 11 Programmer II certification exam.

In this 11-video course, learners can explore streams and the Stream application programming interfaces (APIs), the differences between collections and streams, the structure of stream operations and pipelines, and methods of Stream interface in Java SE 11. To begin, you will explore the concept of streams and the idea behind Stream API. You will then learn how to create basic streams and apply methods on them to illustrate various possible operations. You will examine the differences between collections and streams and describe how to obtain streams; describe the structure of stream operations and pipelines, and view the essential methods of the Stream interface in Java SE 11. Learn to recognize the features of streams and pipelines with focus on reduction operations and ordering, then learn how to apply reduction on parallel operations for concurrency management. You will use the StreamSupport class to work with low-level stream construction, and in the final tutorial, discover how to prevent interference during stream pipeline execution. This is one course is a series to prepare for the 1Z0-816: Java SE 11 Programmer II certification exam.

Explore working with strings in Java, including the use of mutable strings through the StringBuilder class. In this course, you will discover the nature and use of strings and primitive data types, in Java. Observe how to compare and sequence strings, through equality tests and lexicography. Discover mutable strings, the advantages of string builder, and how to concatenate strings. Next, split a string via a regular expression, and learn how to split a paragraph of text into words in a string and iterate over individual words.Other topics include how to consider primitive data types, how to perform the standard modulus mathematical operation on an integer. Finally, you will use combined assignment operators to abbreviate common operations.

Explore the use of variables and operations using strings and numeric types in Java. During this course, you will declare, initialize, and concatenate Java string variables. See how to use the indexOf and substring functions. Declare and initialize Integer and floating-point variables. Learn to modify numeric variables via basic Java mathematical operators. Explore operator precedence rules. Set precedence through parentheses in a Java expression. Assign and concatenate integers and strings. Finally, as a review exercise, you will concatenate various Java variable types to create strings.