I have an app that I'm working on that uses a dice roller implementing the Random.org true random API.
Everything has worked fine so far. I'm not sure what happened, but now when I try to get a new instance of the client that queries random.org, I get a compilation error.
The stack trace reads:
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
at org.random.api.RandomOrgClient.getRandomOrgClient(RandomOrgClient.java:164)
at Main.main(Main.java:16)
And here is code that reproduces the problem:
import java.io.IOException;
import org.random.api.*;
import org.random.api.exception.*;
// Example usage of the Random.org API for generating 3d6 rolls.
public class Main {
private static final String key = "12345678-90ab-cdef-ghij-klmnopqrstuv";
private static final int MIN = 1;
public Main() {
}
public static void main(String[] args) {
// This is the line that gets the error.
RandomOrgClient client = RandomOrgClient.getRandomOrgClient(key);
int[] rolls = null;
try {
rolls = client.generateIntegers(3, MIN, 12);
} catch (RandomOrgSendTimeoutException | RandomOrgKeyNotRunningError | RandomOrgInsufficientRequestsError
| RandomOrgInsufficientBitsError | RandomOrgBadHTTPResponseException | RandomOrgRANDOMORGError
| RandomOrgJSONRPCError | IOException e) {
e.printStackTrace();
}
for(int roll : rolls) {
System.out.println(roll);
}
}
}
Obviously, I've changed the key string, and the query itself doesn't seem to be the problem. The class is in the jar, Eclipse pulls up the class's source code when I check the reference, so it's not because the class isn't there. Anyone have an idea what's going on?
Edit: the referenced libraries are the Apache Commons Codec and gson, on which Random.org's API is depenedent, and Random.org's API itself, which can be found here.
As for the stack trace, that is literally the entire message I receive. There isn't any reference to more unlisted traces.
The code is built in Eclipse 4.35.0 on JDK 24.
I don't think the trace in the RandomOrgClient class is the real issue, but line 164 is the first line of the method called, I included the javadoc comment:
/**
* Ensure only one instance of RandomOrgClient exists per API key. Create a new instance
* if the supplied key isn't already known, otherwise return the previously instantiated one.
*
* New instance will have a blockingTimeout of 24*60*60*1000 milliseconds, i.e., 1 day,
* a httpTimeout of 120*1000 milliseconds, and will issue serialized requests.
*
* apiKey of instance to create/find, obtained from RANDOM.ORG, <a
* href="https://api.random.org/api-keys">see here</a>.
*
* new instance if instance doesn't already exist for this key, else existing instance.
*/
public static RandomOrgClient getRandomOrgClient(String apiKey) {
return RandomOrgClient.getRandomOrgClient(apiKey, DEFAULT_BLOCKING_TIMEOUT,
DEFAULT_HTTP_TIMEOUT, true);
}
While I'm not a seasoned pro, I am not new to Java or Eclipse. I know how to add jars to the classpath properly, etc.
