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Java Tutorials

Java provides a systematic learning path for object - oriented programming. Our tutorials cover Java fundamentals, advanced concepts, and popular frameworks, suitable for both beginners and experienced developers. With free labs and real - world code examples, you'll gain practical experience in Java development. Our Java playground allows you to experiment with different Java features and see immediate results.

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Turn Candidates into Duplicate Groups

Turn Candidates into Duplicate Groups

Confirm candidate fingerprints with real bytes and report every duplicate path.
Java
Read Real Bytes and Keep Paths

Read Real Bytes and Keep Paths

Read binary files safely and save every path with its size and SHA-256 fingerprint.
Java
Give Shipping Rules the Same Interface

Give Shipping Rules the Same Interface

Implement flat and stepped Java shipping rules with explicit eligibility and integer prices.
Java
Compare Replaceable Shipping Rules

Compare Replaceable Shipping Rules

Compare all eligible parcel offers, retain tied winners, and register another rule without changing the workflow.
Java
Keep the Desk State After Restart

Keep the Desk State After Restart

Load and save Java lending records as UTF-8 while preserving existing loans and notes.
Java
Make Borrowing Rules Part of the Object

Make Borrowing Rules Part of the Object

Protect Java tool loans with object state, stable IDs and borrower checks.
Java
Java Control Flow: Conditionals and Loops

Java Control Flow: Conditionals and Loops

Learn Java control flow with hands-on practice in if-else statements, for loops, while loops, and their combinations. Build practical applications like a weather advisor, multiplication table generator, number guessing game, and prime number finder.
Java
How to handle invalid user input in a Java program

How to handle invalid user input in a Java program

Discover effective techniques to handle invalid user input in your Java programs, ensuring robust and reliable application behavior. Learn to utilize exceptions and implement input validation strategies.
Java
How to convert a Long to a double in Java

How to convert a Long to a double in Java

Learn how to easily convert a Java Long data type to a Double data type, with practical examples and use cases. Enhance your Java programming skills today.
Java
How to get the current date and next date using LocalDate in Java

How to get the current date and next date using LocalDate in Java

Learn how to retrieve the current date and calculate the next date using the LocalDate class in Java. Explore the easy-to-use methods for date manipulation and time-based operations.
Java
How to work with Unicode characters in Java

How to work with Unicode characters in Java

Discover how to effectively handle Unicode characters in your Java applications. Learn to represent, input, and output Unicode data seamlessly.
Java
How to handle division by zero in Java programs

How to handle division by zero in Java programs

Explore how to effectively handle division by zero exceptions in Java programs, learn best practices for exception handling, and ensure robust error management in your Java applications.
Java
Java Methods and Basic Object-Oriented Programming

Java Methods and Basic Object-Oriented Programming

Learn Java methods and dive into object-oriented programming (OOP) fundamentals. Learn to create and use methods, design classes, instantiate objects, and enhance your Java coding skills through hands-on exercises.
Java
How to create a mutable List from a Java array without affecting the original array

How to create a mutable List from a Java array without affecting the original array

Learn how to transform a Java array into a mutable List without modifying the original array. Discover the techniques to preserve the original data while creating a flexible List for your Java programming needs.
Java
How to find a word in a Java String using the indexOf() method

How to find a word in a Java String using the indexOf() method

Discover how to efficiently locate a word within a Java String using the powerful `indexOf()` method. Learn practical applications and master string manipulation in Java.
Java
Java Arrays and ArrayLists

Java Arrays and ArrayLists

Learn Java Arrays and ArrayLists in this hands-on lab. Learn to create, manipulate, and convert between these essential data structures for efficient programming.
Java
How to print a Java boolean result

How to print a Java boolean result

Discover how to effectively print Java boolean values and understand the fundamentals of Java booleans. Learn practical examples to enhance your Java programming skills.
Java
How to split a string into an ArrayList using a delimiter in Java

How to split a string into an ArrayList using a delimiter in Java

Learn how to efficiently split a string into an ArrayList using a delimiter in Java. Discover the step-by-step process and explore various techniques to enhance your Java programming skills.
Java
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