CODEWITHSUNDEEP
javalinuxjdbcterminalcentos
CodeMed
CodeMed

Reputation: 9205

calling a java program from CentOS 7 terminal

I am using the code from this tutorial to test the JDBC connection. I changed the name of the class to TestJDBC and I altered the database name and query, but otherwise it is identical. When I run the class as a Java application from within eclipse on my devbox, the program runs properly. However, when I copy the file to /home/username/ on a remote CentOS 7 server, typing java TestJDBC.java into the terminal produces the following error: 

Error: Could not find or load main class TestJDBC.java

I also the same error when I try java TestJDBC and when I upload the .class file in addition to just the .java file. What else do I need to do in order to call the Java class from the CentOS 7 terminal?

Note that javac TestJDBC.java results in -bash: javac: command not found. And I did try java somepackage.TestJDBC with same results of Error: Could not find or load main class TestJDBC.java as above.

ANSWER NOTE: The answer required getting the development version of openJDK using yum. The PATH variable was not part of the solution. However, I am marking the answer below as accepted because the user who submitted it contributed substantially to the solution.

Upvotes: 0

Views: 8047

Answers (1)

Robin Jonsson
Robin Jonsson

Reputation: 2851

You should be able to run it after compiling it

javac TestJDBC.java
java TestJDBC

Note that you do not need to add .class when running it from the commandline.

If this still does not work, please paste your code.

EDIT after request

So you've now stated that you're missing javac from your PATH. I'll show you how to add it:

$> export JAVA_HOME=/path/to/jdk/jdk.1.8.0_20
$> export PATH=$PATH:$JAVA_HOME/bin

Verify by running

javac -version

It should print something like 

javac 1.8.0_20

Upvotes: 1

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