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

I found this while looking for an answer myself, I ended up writing this bit:

/**
 * This opens a command line and runs some other class in the jar
 * @author Brandon Barajas
 */
import java.io.*;
import java.awt.GraphicsEnvironment;
import java.net.URISyntaxException;
public class Main{
    public static void main (String [] args) throws IOException, InterruptedException, URISyntaxException{
        Console console = System.console();
        if(console == null && !GraphicsEnvironment.isHeadless()){
            String filename = Main.class.getProtectionDomain().getCodeSource().getLocation().toString().substring(6);
            Runtime.getRuntime().exec(new String[]{"cmd","/c","start","cmd","/k","java -jar \"" + filename + "\""});
        }else{
            THEMAINCLASSNAMEGOESHERE.main(new String[0]);
            System.out.println("Program has ended, please type 'exit' to close the console");
        }
    }
}

not sure if my answer is still relevant, but feel free to use it with the comment kept in o/

Only flaw I can think of is that it leaves the cmd window open after the program completes.

Usage: place this class in the same package as your main class and set it as the main class, it will open a command prompt window if one is not open, or if one is open launch the main class. Name / location of jar file is automatic. Designed for windows, but if you want it for another system just message me and I'll fix it. (I could do OS detection but I'm lazy and just making this so I can turn in a double-click jar file to my professor who uses windows).

Try this:

control "C:\Program Files\Java\jre\bin\javacpl.cpl"

Replace path with your Java installation.

Alternatively, you can also use javaws -viewer.

Note that you might need an elevated command prompt (Run as Administrator) instead of "regular" one.

If you've manually installed Oracle Java it doesn't show up in the Dash (as far as I know).

1. Open a terminal

2. Execute the following command:

   /usr/bin/jdk1.8.0_05/bin/ControlPanel
   

   Replace /usr/bin/jdk1.8.0_05 by the path of your Java installation.

If your Main class is in a package called FileManagement, then try:

java -cp . FileManagement.Main

in the parent folder of the FileManagement folder.

If your Main class is not in a package (the default package) then cd to the FileManagement folder and try:

java -cp . Main

More info about the CLASSPATH and how the JRE find classes:

• How Classes are Found
• Setting the class path (Solaris/Linux)
• http://en.wikipedia.org/wiki/Classpath_(Java)

You can do this via installing java jdk version 9 and then using jshell.

Just simply use this command:-

$ jshell Then this will get prompted:-

|  Welcome to JShell -- Version 9.0.4
|  For an introduction type: /help intro

jshell>

Then just run your code there.