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PODo I need to import a package from a jar file after setting the classpath?
 

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  1. PODo I need to import a package from a jar file after setting the classpath?
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    <p>So here is the deal - I downloaded a jar file that I need to communicate with an Allen Bradley PLC. Naturally I set up the CLASSPATH and expected to just be able to create a program with a constructor from one of the classes in the jar file and go about my way. This was not the case.</p> <p>Here is my CLASSPATH:</p> <pre><code>nick@ubuntu:~/Java/PLC Program$ echo $CLASSPATH /home/nick/Java/PLC Program/ethernetip4j-0.2.jar </code></pre> <p>Here is the code in my program:</p> <pre><code>ControlLogixConnector test = new ControlLogixConnector(ENBTIP,44818); </code></pre> <p>I compile and get the following errors:</p> <pre><code>nick@ubuntu:~/Java/PLC Program$ javac PLCServer.java PLCServer.java:13: error: cannot find symbol ControlLogixConnector test = new ControlLogixConnector(ENBTIP,44818); ^ symbol: class ControlLogixConnector location: class PLCServer PLCServer.java:13: error: cannot find symbol ControlLogixConnector test = new ControlLogixConnector(ENBTIP,44818); ^ symbol: class ControlLogixConnector location: class PLCServer 2 errors </code></pre> <p>I have my program and jar file in the same directory. Do I need to import any package that is in the jar file or am I missing something else completely different?</p> <p>Thanks in advance</p> <p>EDIT:</p> <p>Here is my code:</p> <pre><code>import java.io.*; import java.net.*; import se.opendataxchange.ethernetip4j.clx.ControlLogixConnector; class PLCServer { public static void main(String argv[]) throws IOException { // IP address of the ethernet card String ENBTIP = "192.168.10.14"; ControlLogixConnector test = new ControlLogixConnector(ENBTIP,44818); } } </code></pre> <p>I get errors saying the se.opendataexchange.ethernetip4j.clx.ControlLogixConnector doesn't exist and the ControlLogixConnector object doesn't exist (compiled with javac PLCServer.java). </p>
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    1. USCup O Noodles
    1. USCup O Noodles
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    1. COimport statements?
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      1. PODo I need to import a package from a jar file after setting the classpath?
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    2. COYou need to `import` required classes. You might want to step back and bone up on how Java works before going too much further; it may save some time.
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      1. PODo I need to import a package from a jar file after setting the classpath?
      1. USDave Newton
    3. COThe jar may contain several packages. Use import.
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      1. PODo I need to import a package from a jar file after setting the classpath?
      1. USxagyg
 

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