Transcript IDEs
IDEs Department of Information Systems and Computer Science Ateneo de Manila University Overview What is an IDE? Why use an IDE? Familiarization with different IDEs 6/19/2005 JCreator BlueJ Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 2 What is an IDE? “Integrated Development Environment” source code editor, a compiler and/or interpreter, build-automation tools, and (usually) a debugger Allows you to create, edit, compile and run programs written in a particular language, e.g. Java 6/19/2005 Some IDEs can support more than one language Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 3 What is an IDE? Some have other features that aid in developing better programs: 6/19/2005 Debugging Test cases Code formatting (colored keywords, etc.) Etc. Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 4 Why use an IDE? Easier to code because of colored text Makes it easier to develop programs, so you can focus more on the coding Contains features to make debugging and writing programs easier 6/19/2005 Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 5 Different IDEs for Java JCreator BlueJ Eclipse Visual Café Java NetBeans Visual Studio …and many more! 6/19/2005 These are what we will use this semester. Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 6 6/19/2005 Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 7 JCreator A small, lightweight IDE developed by the Xinox Software. Two licenses available: Lite edition - Freeware (limited features) Pro edition - Shareware (requires payment, but with full features) Download from http://www.jcreator.com 6/19/2005 Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 8 JCreator Allows you to create/edit single programs. Project – Contains java sources and other files needed for your applications and applets. Workspace – container of projects; a workspace can contain multiple projects but it is not uncommon to have a single-project workspace. 6/19/2005 Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 9 Using JCreator for the first time… You might have to configure two things: 1. Where Java is installed. 2. usually in C:\Program Files\Java\jdk1.5.0_06\ Where the Java documentation is found. If unzipped, usually found in C:\Program Files\Java\jdk1.5.0_06\docs\ If you have to reconfigure these, it is usually found on the menu bar: 6/19/2005 ConfigureOptionsJDK Profiles Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 10 Default project directory It is also helpful to set the default project directory so you know where your files land If you don’t set it, it will be in a folder under “Program Files\Xinox Software\JCreatorC3LE” Better to create the folder where you want your Java projects to reside and then set the default directory to that folder 6/19/2005 Configure -> Options -> Directories Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 11 Familiarization with JCreator Create, compile and execute a java project: Name the project HelloWorld (start with an empty project) Add a single file to the project called Hello.java Type in the Hello.java code from before (try multiple System.out.println statements this time) Compile and execute (Shortcuts: F7 and F5) Experiment with IDE features 6/19/2005 See how it deals with compile errors Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 12 “Project-less” compilation You can also create/open a Java file in JCreator and compile it directly (even if it is not part of a project) Example 6/19/2005 Download HelloYouWithFrame.java Open it using JCreator Compile and execute Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 13 BlueJ 6/19/2005 Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 14 BlueJ Another IDE, but written in Java First developed by University of Kent Download from http://www.bluej.org Ideal for first-time programmers Features include the debugger, test runs, etc. 6/19/2005 Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 15 BlueJ Allows you to start programming right away, focusing on object fields and methods, and less on syntax Allows you to see objects in action 6/19/2005 shows you how classes are related through boxes and lines Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 16 Using BlueJ for the first time You will also have to specify where your Java executable is located Usually at C:\Program Files\Java\jdk1.5.0_06\bin\java.exe Then, create/open a BlueJ project 6/19/2005 Note: Non-BlueJ folders containing Java files will have to be converted to a BlueJ project. Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 17 Familiarization with BlueJ Again, create, compile and execute a HelloWorld application Make sure there are multiple println statements in the Java class so that you can try out the debugger later Execute by right-clicking on the Java class icon and executing main Try out the debugger 6/19/2005 Set a breakpoint and execute the Java class Copyright 2005, by the authors of these slides, and Ateneo de Manila University. All rights reserved. L2: IDEs Slide 18