Free Java Tutorials & Guide | Java programming source code A Quick, Painless Introduction to the Java Programming Language Norman Matloff University of California, Davis ©2001, N. Matloff March 6, 2003 1 Why All This Hype over Java? 1 Why All This Hype over Java? For the past few years, the press has been full of sensational stories about Java. 2 Learning Java Given these nice features, and given the fact that reportedly Java has overtaken C++ as the language in highest demand by employers, this is a language worth learning. 3 A 1-Minute Introductory Example Here is the obligatory "Hello World!" public class Hi { public static void main(String[] Args) { System.out.println("hi"); } } The basic module unit in Java, and in OOP generally, is the class. javac Hi.java from the command line. java Hi Had there been command-line arguments for the program, to go in the variables Args above, they would have been typed right after "Hi" on the command line. 4 A 30-Minute Example 4.1 Example Program This program will read in some integers from the command line, storing them in a linked list which it maintains in sorted order. as
Packaging and Deploying Desktop Java Applications Contributed by Max Sauer and maintained by Patrick Keegan One question that a lot of beginning programmers have is: "Now that I've created my application in the IDE, how do I get it to work from the command line outside of the IDE." Similarly, someone might ask, "How do I distribute this application to other users without having to give them the whole IDE as well?" The answers to these questions are relatively simple, but not necessarily obvious. Double-clicking the application's Java Archive (JAR) file. Along the way, we will cover some basics of JAR file structure and how JAR files are dealt with inside IDE projects. Expected duration: 30 minutes for the main exercise and 15 minutes for the optional exercise. Setup: Installing and Configuring the Tutorial Environment Download the DeploymentTutorial.zip file and unpack it on to your system. On Microsoft Windows systems, use WinZip or similar archive packaging software to extract the files. $ unzip DeploymentTutorial.zip Note: #! Next Steps
Java Programming Cheatsheet This appendix summarizes the most commonly-used Java language features in the textbook. Here are the APIs of the most common libraries. Hello, World. Editing, compiling, and executing. Built-in data types. Declaration and assignment statements. Integers. Floating-point numbers. Booleans. Comparison operators. Parsing command-line arguments. Math library. The full java.lang.Math API. Type conversion. If and if-else statements. Nested if-else statement. While and for loops. Break statement. Do-while loop. Switch statement. Arrays. Compile-time initialization. Typical array-processing code. Two-dimensional arrays. Ragged arrays. Our standard output library. The full StdOut API. Our standard input library. The full StdIn API. Our standard drawing library. The full StdDraw API. Our standard audio library. The full StdAudio API. Redirection and piping. Functions. Libraries of functions. Our standard random library. Our standard statistics library. Using an object. Creating an object. Instance variables. Constructors. Classes.
Java Tip 66: Control browsers from your Java application It's great that Java applets and browsers are so tightly integrated, but what if you want to have your Java application display a URL? There's no API call in any Java package that can help you with that. However, using the exec() command, you can fork a process and issue a command to the underlying OS. On Unix, for Netscape, it was easy to figure this out as you only need to type "netscape -help". netscape -remote openURL( And, if the browser is not already running, you type: netscape Under Windows, it took much exploration and a bit of luck to find something equivalent that wouldn't open a new browser windows for each request. Follow-up tips From Ryan Stevens: For Mac users, here's an easy way to open a Web page in the default browser, usi ng MRJ 2.2: From Mark Weakly: You can launch the command line stuff on Mac similar to Unix (MacOS 8 and 9), except you must place the command-line tokens into a java.lang.String array. * * Examples:
Git for the lazy - Spheriki From Spheriki Git is a distributed version control system . No, you don't need to know what that means to use this guide. Think of it as a time machine: Subversion or CVS without the cruft. If you make a lot of changes, but decided you made a mistake, this will save your butt. This guide is for people who want to jump to any point in time with their project/game/whatever, and want something to use for themselves. Windows For Windows, you have two options: msysGit Download and install msysGit to use Git in Windows's cmd.exe console. Cygwin Download Cygwin . Put setup.exe in a folder of its own in your documents. Launch setup.exe . While installing Cygwin, pick these packages: from the DEVEL category (if you're wimpy) or (if you know it), both in the EDITORS category You'll now have a shortcut to launch Cygwin, which brings up something like the Linux terminal. Linux Install the git package using your preferred method (package manager or from source). Fire up your Cygwin/Linux terminal, and type: git init
Introduction to Java programming, Part 1: Java language basics Introduction to Java programming, Part 1 Object-oriented programming on the Java platform Find out what to expect from this tutorial and how to get the most out of it. About this tutorial The two-part Introduction to Java programming tutorial is meant for software developers who are new to Java technology. This first part is a step-by-step introduction to OOP using the Java language. Part 2 covers more-advanced language features, including regular expressions, generics, I/O, and serialization. Objectives When you finish Part 1, you'll be familiar with basic Java language syntax and able to write simple Java programs. Prerequisites This tutorial is for software developers who are not yet experienced with Java code or the Java platform. System requirements To complete the exercises in this tutorial, you will install and set up a development environment consisting of: JDK 8 from OracleEclipse IDE for Java Developers Download and installation instructions for both are included in the tutorial. Loops
Java Tutorial Java is a high-level programming language originally developed by Sun Microsystems and released in 1995. Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX. This tutorial gives a complete understanding of Java. This reference will take you through simple and practical approach while learning Java Programming language. This reference has been prepared for the beginners to help them understand the basic to advanced concepts related to Java Programming language. Before you start doing practice with various types of examples given in this reference, I'm making an assumption that you are already aware about what is a computer program and what is a computer programming language? For most of the examples given in this tutorial you will find Try it option, so just make use of this option to execute your Java programs at the spot and enjoy your learning.
jQuery Mobile SQL, PL/SQL, and Java In Oracle, SQL, PL/SQL, XML, and Java all interoperate seamlessly in a way that allows developers to mix-and-match the most relevant features of each language. SQL and PL/SQL form the core of Oracle's application development stack. Not only do most enterprise back-ends run SQL, but Web applications accessing databases do so using SQL (wrappered by Java classes as JDBC), Enterprise Application Integration applications generate XML from SQL queries, and content-repositories are built on top of SQL tables. It is a simple, widely understood, unified data model. Overview of PL/SQL PL/SQL is Oracle's procedural language extension to SQL. PL/SQL enables you to mix SQL statements with procedural constructs. An anonymous block is a PL/SQL block that appears in your application and is not named or stored in the database. A stored procedure is a PL/SQL block that Oracle stores in the database and can be called by name from an application. How PL/SQL Runs Interpreted Execution Native Execution Cursors
8 Free Sites to Learn Java Online Java is a general-purpose, concurrent, class-based, object-oriented language that is specifically designed to have as few implementation dependencies as possible. It is intended to let application developers “write once, run anywhere.” Java is currently one of the most popular programming languages in use, particularly for client-server web applications. And knowing Java can be a lucrative skill to possess in the current computer-and-Internet-focused marketplace. 1. 2. 3. 4. 5. 6. 7. 8. New to Java Programming Center Java Basics offers a quick overview and the steps to create a 'Hello, World' program. Get Started provides the resources needed to develop applications with Java technologies Training includes courses, certifications and package information Connect with the millions of existing Java professionals via conferences, blogs and more. Young Developers covers online resources to learn Java application development at any age, as well as a tutorial about Minecraft mods and Java What's New! JavaOne 2014 Sessions Replay Available Virtual Technology Summit on Demand Java The Complete Reference, by Herbert Schildt (Free Sample) 20% discount on the latest Java Books from Oracle Press Oracle's Java Magazine features The Internet of Things Save 50% on NEW Java ebooks from O’Reilly Media. An array is a ____________ of variables of the same type, referred to through a common name. Click here for the answer Why Java? What Would You Like to Build with Java?
Technology Network for Java Developers Oracle Technology Network > Java Software Downloads View All Downloads Top Downloads New Downloads What's New Java in the Cloud: Rapidly develop and deploy Java business applications in the cloud. Essential Links Developer Spotlight Java EE—the Most Lightweight Enterprise Framework? Blogs Technologies Contact Us About Oracle Cloud Events Top Actions News Key Topics Oracle Integrated Cloud Applications & Platform Services The Java™ Tutorials The Java Tutorials are practical guides for programmers who want to use the Java programming language to create applications. They include hundreds of complete, working examples, and dozens of lessons. Groups of related lessons are organized into "trails". The Java Tutorials primarily describe features in Java SE 8. What's New The Java Tutorials are continuously updated to keep up with changes to the Java Platform and to incorporate feedback from our readers. Lambda expressions enable you to treat functionality as a method argument, or code as data. Apart from fixing typos and errors, this update includes also includes the following: The Security trail has been restructured; find security information about applets and Java Web Start applications in the Java Applets lesson. Trails Covering the Basics These trails are available in book form as The Java Tutorial, Fifth Edition. Creating Graphical User Interfaces Specialized Trails and Lessons