JVM interprets the Java bytecode, controls how it interacts with the operating system and manages memory.

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1 Appendix 2 Installing the Java Development Kit A2.1. Why Java? Presented in May 1995 and developed by J. Gosling and P. Naughton of Sun Microsystems, Java is an object-oriented programming language. It is now owned by Oracle which bought Sun in Java s slogan is WORA Write once, run anywhere. By now, you will have understood that one of the main advantages of Java is its portability. You take your source code and you compile it once and it can then be used on any platform (Microsoft Windows, Linux, OSX, etc.) Another important advantage is the fact that it is free. When you download Java, you are able to access the Java Runtime Environment (JRE). It is made up of Java Virtual Machine (JVM), standard classes and Java libraries. JVM interprets the Java bytecode, controls how it interacts with the operating system and manages memory. The JVE relates to the running of the Java software and makes it possible to run a Java application. Java Development Kit (JDK) is the development kit for the Java language. It incorporates, among others, the compilation tools and the debugger. Modeling and Simulation of Logistics Flows 2: Dashboards, Traffic Planning and Management, First Edition. Jean-Michel Réveillac. ISTE Ltd Published by ISTE Ltd and John Wiley & Sons, Inc.

182 Modeling and Simulation of Logistics Flows 2 JDK contains JRE in order to be able to test the applications developed. A2.2. Downloading Download the Java Standard Edition (SE) development kit (JDK) at: www.

2 182 Modeling and Simulation of Logistics Flows 2 JDK contains JRE in order to be able to test the applications developed. A2.2. Downloading Download the Java Standard Edition (SE) development kit (JDK) at: Be sure to select the appropriate version for your operating system. COMMENT A2.1. Please note that this address is subject to change. Should this happen, use a search engine to search for JDK. A2.3. Testing the presence of the JDK compiler Install JDK. Once it has been installed, open your system s command menu. With the OSX platform, use the application Terminal, located in the Applications/Utilities folder. Figure A2.1. The sub-folder Utilities, located in the Applications folder in OSX. Note the application Terminal Below Microsoft Windows 7, enter cmd in Search programs and files from the START menu (circle featuring the Microsoft Windows logo), at the bottom left, then confirm by pressing ENTER.

3 Appendix Figure A2.2. The field Search programs and files (on the left) and inputting cmd in the same field (on the right) In Microsoft Windows XP, from the START menu, at the bottom left, go to Run, type cmd in the OPEN field in the RUN dialog box that will open, then click on the OK button. Figure A2.3. The Run option from All programs and the RUN dialog box featuring the field OPEN containing cmd

184 Modeling and Simulation of Logistics Flows 2 You can also access the Command Prompt from All programs in the Accessories folder. Figure A2.4. The command prompt option in the Accessories folder in Microsoft Windows XP COMMENT A2.

Once your command menu window is displayed, enter javac followed by ENTER (open the java compiler). A list of commands for use should appear. Figure A2.5.

4 184 Modeling and Simulation of Logistics Flows 2 You can also access the Command Prompt from All programs in the Accessories folder. Figure A2.4. The command prompt option in the Accessories folder in Microsoft Windows XP COMMENT A2.2. In Microsoft Windows 8, you can access the RUN command by holding down the Windows button and pressing R. Once your command menu window is displayed, enter javac followed by ENTER (open the java compiler). A list of commands for use should appear. Figure A2.5. The command list for use with javac from the Microsoft Windows command menu (on the left) and from the OSX Terminal (on the right)

5 Appendix With OSX, you should not encounter any problems. With Microsoft Windows, if this list doesn t appear and a message saying something along the lines of javac has not been recognized as an internal command, is displayed, this will be because you have forgotten the environment variable path. A2.4. Creating the environment variable Here is the procedure to follow for resolving this issue: go to the Java installation folder, for example: C:\ProgramFiles\Java ; open the folder of your JDK, for example jdk1.8.0_91 ; then open the folder bin ; copy the access path for this folder, for example: C:\ ProgramFiles\Java\jdk1.8.0_91\bin ; right click on your work post, then select PROPERTIES; COMMENT A2.3. It is also possible to access the system properties via the configuration by selecting SYSTEM AND SECURITY, then SYSTEM (Microsoft Windows 7) or SYSTEM, then the ADVANCE tab (Microsoft Windows XP). select ADVANCED SYSTEM PARAMETERS then click on the ENVIRONMENT VARIABLE button; select the variable Path in the list of variable users if it is there, and click on the MODIFY button. Otherwise, click on the NEW button and give it the name Path ; in the VARIABLE VALUE field, if a set of values is already present, add an ; (semi-colon) at the end, then past the path that you have previously copied. Otherwise simply paste the copied path; click on the OK button to close each of the windows then finish by closing the properties window; your javac compiler should now be operational.

186 Modeling and Simulation of Logistics Flows 2 Figure A2.6. From the properties of the work post we can see all of the windows for accessing the environment variable Path (Microsoft Windows 7) COMMENT A2.

6 186 Modeling and Simulation of Logistics Flows 2 Figure A2.6. From the properties of the work post we can see all of the windows for accessing the environment variable Path (Microsoft Windows 7) COMMENT A2.4. In order to take into account the modifications relating to the environment variable, you will need to close and relaunch the command menu window.

Certified Core Java Developer VS-1036

Certified Core Java Developer VS-1036 VS-1036 1. LANGUAGE FUNDAMENTALS The Java language's programming paradigm is implementation and improvement of Object Oriented Programming (OOP) concepts. The Java language has its own rules, syntax, structure