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CSCI/CMPE 3326
Object-Oriented Programming in Java
Dr. Dongchul Kim
Department of Computer Science University of Texas Rio Grande Valley
Course Information, JVM, Compile and Run, IDE, Android Studio
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Course Information • Instructor:Dr.DongchulKim• Office:ENGR3.272• Email:[email protected]• Homepage:h"p://faculty.utrgv.edu/dongchul.kim/• OfficeHours:Mon&Wed,1:30~2:30pm,byappointment,
oranyNmetheofficedoorisopen.• CourseWebPage:
– h"p://faculty.utrgv.edu/dongchul.kim/CSCI3326/
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Course Information • TAName:AdolfoGonzalezIII• Email:[email protected]• Office:ENGR3.273A• OfficeHours:TBA
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Textbook • OpNonal• Title: Starting Out with Java: From Control Structures • Through Objects, 6th Edition • Author: Tony Gaddis • Publisher: Addison-Wesley, March 22, 2015 • ISBN-13: 978-0133957051 • Link: http://goo.gl/lHXMxJ
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Textbook • OpNonal• Title:HeadFirstJava,2nd
EdiNon• Author:KathySierra,BertBates• Publisher:O'ReillyMedia,
February9,2005• ISBN-13:978-0596009205• Link:h`p://goo.gl/dA6rVy
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Evaluation • LabAssignments15%• ProgrammingAssignments25%• Exams40%• Project20%
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Rule 1 • Any OS is okay (Windows, Mac OS, Linux,
Chrome OS, and so on) • Please come to my office if you couldn’t
understand the course materials • or ask TA • Please don’t be shy • There is no such thing as a stupid question
– Exception? – Respect your classmates
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Rule 2 • No late submission • No cheating
– Respect your classmates
• Frequently check your UTRGV email, course website, and blackboard
• Come to class on time • Start HW early • Enjoy (Best chance to improve your
programming skill)
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Rule 3
• Excuse me – Flexible course schedule
• Bring your laptop with fully charged battery
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Rule 4
• I will do my best • You should also do your best
– Everyday do Java programming
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The Way Java Works
Source Compiler Output Virtual Machine
1.Createasourcedocument.Useanestablishedprotocol(inthiscase,theJavalanguage).
2. Run your document through a sourcecode compiler. The compiler checks forerrorsandwon’tletyoucompileunNlit’ssaNsfiedthateverythingwillruncorrectly.
3. The compiler creates a new document, codedintoJavabytecode.AnydevicecapableofrunningJavawillbeabletointerpret/translatethisfileintosomething it can run. The compiled bytecode isplamormindependent.
4.Thevirtualmachinereadsandrunsthebytecode.
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What you’ll do in Java
Source Compiler Output Virtual Machine
1.Typeyoursourcecode.Saveas:Hello.java
2. Compile theHello.javafile by runningjavac (the compiler applicaNon). If youdon’t have errors, you’ll get a seconddocumentnamedHello.classThe compiler-generatedHello.class file ismadeupofbytecode
4.RuntheprogrambystarNngtheJava Virtual Machine (JVM) withthe Hello.class file. The JVMtranslates the bytecode intosomethingtheunderlyingplamormunderstands, and runs yourprogram.
3.Compiledcode:Hello.class
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Java Compiler and JVM • Withmostprogramminglanguages,portabilityisachievedbycompilingaprogramforeachCPUitwillrunon.
• JavaprovidesanJVMforeachplamormsothatprogrammersdonothavetorecompilefordifferentplamorms.
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Java Software Edition • The software you use to write Java programs is
called the Java Development Kit, or JDK. • There are different editions of the JDK:
– Java SE – Standard Edition • Provides essential tools for developing applications and applets
– Java EE – Enterprise Edition • Provides tools for creating large business applications that employ servers
and provide services over the Web
– Java ME – Micro Edition • Provides a small, optimized runtime environment for consumer products
such as cell phones, pagers, and appliances • Available for download at https://
www.oracle.com/java/index.html
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Plz. Memorize Now! **Details will be explained later on.
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Install Java • Java SE • http://www.oracle.com/technetwork/java/
javase/downloads/index-jsp-138363.html
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Install Java
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Install Java
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Setting Path in Windows • Windows 8
– Drag the Mouse pointer to the Right bottom corner of the screen – Click on the Search icon and type: Control Panel – Click on → Control Panel → System → Advanced – Click on Environment Variables, under System Variables, find PATH, and click on it. – In the Edit windows, modify PATH by adding the location of the class (e.g. C:\Program Files\Java
\jdk1.8.0_31\bin\) to the value for PATH. If you do not have the item PATH, you may select to add a new variable and add PATH as the name and the location of the class as the value.
– Close the window. – Reopen Command prompt window, and run your java code.
• Windows 7 – Select Computer from the Start menu – Choose System Properties from the context menu – Click Advanced system settings → Advanced tab – Click on Environment Variables, under System Variables, find PATH, and click on it. – In the Edit windows, modify PATH by adding the location of the class (e.g. C:\Program Files\Java
\jdk1.8.0_31\bin\) to the value for PATH. If you do not have the item PATH, you may select to add a new variable and add PATH as the name and the location of the class as the value.
– Reopen Command prompt window, and run your java code.
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Setting CLASSPATH Variable • Right-click the My Computer icon on • your desktop and select Properties. • Click the Advanced tab. Click the • Environment Variables button. Under System Variables, click
New. • Enter the variable name as CLASSPATH. • Enter the variable value (e.g. .;) • The CLASSPATH variable is one way to tell applications,
including the JDK tools, where to look for user classes. • Click OK. • Click Apply Changes.
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Setting JAVA_HOME Variable • Right-click the My Computer icon on • your desktop and select Properties. • Click the Advanced tab. Click the • Environment Variables button. Under System Variables, click
New. • Enter the variable name as JAVA_HOME. • Enter the variable value (e.g. C:\Program Files\Java\jdk1.8.0_31)
as the installation path for the Java Development Kit. • Click OK. • Click Apply Changes.
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Compile • TheJavacompilerisacommandlineuNlity.• Thecommandtocompileaprogramis:
– javac filename.java – javacmeansJavacompiler.
• The.java fileextensionmustbeused.– Example:TocompileajavasourcecodefilenamedHello.javayouwouldusethecommand:
– javac Hello.java
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Run • ToruntheJavaprogram,youusethejavacommandinthefollowing
form:– java ClassFilename
• ClassFilenameisthenameofthe.class filethatyouwishtoexecute.– However,youdonottypethe.class extension.
• Forexample,toruntheprogramthatisstoredintheHello.classfile,youwouldenterthefollowingcommand:– java Hello – ThiscommandrunstheJavainterpreter(theJVM)andexecutesthe
program.
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Windows Command Prompt
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IDE • InaddiNontothecommandpromptprograms,thereare
alsoseveralJavaIntegratedDevelopmentEnvironments(IDEs).
• Theseenvironmentsconsistofatexteditor,compiler,debugger,andotheruNliNesintegratedintoapackagewithasinglesetofmenus.
• Aprogramiscompiledandexecutedwithasingleclickofabu`on,orbyselecNngasingleitemfromamenu.
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Most Popular IDE: Eclipse
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IDE from Oracle: NetBeans
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Install Eclipse
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Install Eclipse
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Install Eclipse
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Install Eclipse
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Install Eclipse
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Install Eclipse
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Comment
• The // in line 1 marks the beginning of a comment. • The compiler ignores everything from the double slash
to the end of the line. • Comments are not required, but comments are very
important because they help explain what is going on in the program.
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Lab1-1 • Install Eclipse • Make a java program that displays “hello yourname” • In the first line of your program, please put a comment
with your name and lab number – //Dongchul Kim, lab1-1
• Save as “Hello.java” • Compile and Run • Give a demo to your instructor or TA.
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Install IDE for Android App • http://developer.android.com/sdk/index.html
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Install Android Studio
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Install Android Studio
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Install Android Studio
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Install Android Studio
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Install Android Studio
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Hello World for Android App
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Hello World for Android App
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Hello World for Android App
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Hello World for Android App
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Hello World for Android App
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Lab1-2 • Make a Android app that displays “Hello yourname” on
Android phone • Demonstrate it to your instructor!