Methods In Java – Types, Class, Main, Parameters, and Examples
What is Java Methods Methods in Java are a collection of statements or a block of code organized together to conduct a certain task or operation. It is used to …
Java Tutorial
Java is the language that teaches object-oriented programming better than any other, strict typing, explicit class structures, mature ecosystem. It’s the backbone of enterprise software, Android apps, and countless BSIT capstones built with NetBeans or IntelliJ. This hub collects free Java tutorials from “hello world” through Swing GUIs, JavaFX, JDBC database integration, and Spring Boot REST APIs.
What you’ll learn in the Java tutorial series
Core syntax: variables, primitives, operators, control flow
Object-Oriented Programming: classes, objects, inheritance, polymorphism, encapsulation, abstraction
Collections framework: ArrayList, HashMap, HashSet, LinkedList, iterators
Exception handling: try/catch/finally, checked vs unchecked, custom exceptions
File I/O: reading/writing files, streams, NIO
JDBC: connecting to MySQL or SQL Server, prepared statements, transactions
GUI development: Swing (NetBeans), JavaFX (modern UI)
Modern Java: lambda expressions, streams, var, records, switch expressions
Spring Boot intro: REST APIs, dependency injection, JPA
Why Java for BSIT capstones
Java is preferred by BSIT/BSCS panels that emphasize OOP discipline: Java’s strict structure forces students to think about classes, inheritance, and encapsulation before writing code. It’s the dominant language for Android development (via NetBeans + Android Studio), enterprise systems (Spring Boot), and many desktop capstones (Swing + JDBC + MySQL). Performance is excellent, deployment is well-documented.
Recommended Java development setup
JDK 21 LTS (current stable Long-Term Support release)
NetBeans (most common for Philippine BSIT capstones) or IntelliJ IDEA Community (free, more modern)
Maven or Gradle for build tooling and dependency management
MySQL Connector/J for JDBC database connections
Git for version control (and GitHub for backup + showcasing)
JUnit for unit testing
Related Java resources
Java Projects, downloadable Java capstones
MySQL Projects, JDBC + MySQL integration
Android Projects, mobile capstones using Java
UML Diagrams, for OOP capstone documentation
Database Design, for ER diagrams in your Chapter 3
Scroll down to browse the full Java tutorial catalog ↓
How to use Regular Expression in Java – Tutorial and Importance
What is Regular Expression in Java A Regular Expression or regEx in Java is a special string of characters that helps you match or find other strings or sets of …
Date And Time In Java – Importance, Local, Current, and Formatting
What is Java Date and Time The Java Date and Time is a representation of date (year, month, and day (yyyy-MM-dd)). LocalTime represents a time (hour, minute, second, and nanosecond …
How to Declare Array in Java – Use, Creating, Types, and Class
This is a continuation of the previous topic, entitled String. With the help of some examples, we will learn how to declare, initialize, and access array elements. The Java Arrays Are …
Methods Of String Class In Java With Example
What is String Class In Java The String Class In Java handles character strings. All string literals in Java programs, like “abc”, are implemented as instances of this class. Strings …
Java Character Classes With Best Examples
What is Java Character Classes The Java Character Class is an instance of a type Character that has a single field whose type is char. The Character class has a …
Number Classes In Java With Example And Best Explanation
The Number class In Java is the superclass of BigDecimal, BigInteger, Byte, Double, Float, Integer, Long, and Short. The subclasses of Number must have methods for converting the represented number …
Decision Making in Java – if, if-else, switch, break, continue, jump
What is decision-making in Java? Decision-making in Java is a structure that has one or more conditions that need to be evaluated or tested by the program. Along with a statement or statements …
Loops In Java – Best And Complete Guide For Beginners
What is Loops in Java? The Loops in Java is a set of instructions to be run repeatedly until a certain condition is met. Loops are also called iterating statements …
Basic Operators in Java With Simple Examples
What are the Basic Operators in Java The Basic Operators In Java are symbols that do operations on variables and values. For instance, + is an operator used for addition, …
Modifiers In Java – Access Modifiers And Non- Access Modifiers
What are Modifiers in Java? The Modifiers In Java, these are words that change the meanings of definitions by being added to them. There are many kinds of modifiers in …
Data Types In Java With Examples
What is Data Types in Java The Data types in Java are the basic building blocks of manipulating data in Java. Primitive data types can only hold data of the …
Frequently Asked Questions
Is Java still worth learning in 2026?
Yes — Java is still in the top 3 most-used programming languages globally and dominates enterprise software, Android development, and large-scale backend systems. For BSIT/BSCS capstones, Java with NetBeans or IntelliJ remains a top choice for OOP-focused panels. Modern Java (versions 17+) has lambdas, streams, records, and pattern matching — comparable to newer languages in expressiveness.
Which Java version should I use?
Use a Long-Term Support (LTS) release: JDK 21 (current LTS, recommended) or JDK 17 (still widely supported). Avoid old Java 8 unless required by legacy code — it lacks modern features. Get the JDK from OpenJDK (free, e.g., from Eclipse Temurin) — don't pay for Oracle JDK; the open-source builds are identical.
NetBeans, IntelliJ, or Eclipse — which IDE?
NetBeans — most common for Philippine BSIT capstones; great drag-and-drop Swing GUI builder, easy database wizards. IntelliJ IDEA Community Edition — free, more modern, better refactoring tools; industry standard for Java in 2026. Eclipse — older, still used in enterprise, less polished. For new capstones, IntelliJ Community is the best free choice. For panels that prefer the drag-and-drop GUI builder, stick with NetBeans.
How do I connect Java to a database?
Use JDBC (Java Database Connectivity). Steps: (1) Add the database driver JAR to your project (e.g., MySQL Connector/J for MySQL). (2) Open a
Connection with DriverManager.getConnection(url, user, pass). (3) Use PreparedStatement (NOT Statement) for queries — prevents SQL injection. (4) Process results with ResultSet. (5) Close resources in a finally block or use try-with-resources for automatic cleanup.What's the difference between Java SE, Java EE, and Spring Boot?
Java SE (Standard Edition) — the core language and standard library. This is what you learn first; sufficient for desktop apps and JDBC database apps. Java EE / Jakarta EE — enterprise specifications (Servlets, JPA, EJB) — older approach to web apps. Spring Boot — modern Java web framework that replaces Java EE for most use cases; simpler, faster, larger community. For 2026 capstones doing web work, use Spring Boot.
What can I build with Java for my capstone?
Common Philippine BSIT capstone domains using Java: Desktop CRUD apps (Swing/JavaFX + JDBC + MySQL) — Library, Hospital, School systems. Android mobile apps — booking, attendance, study aids. Spring Boot REST APIs — back-ends for React/Vue front-ends. Enterprise systems — Inventory, Payroll, ERP-style. Browse our Java Projects hub for downloadable examples.