import openeye.oechem.*;

public class CustomErrorHandler {

    private class MyErrorHandler extends OEErrorHandlerImplBase {
        @Override
        public void Msg(int level, String msg) {
            System.err.println("thread:" + Thread.currentThread().getId() +
                    " level:" + level +
                    " msg:" + msg);
        }

        @Override
        public OEErrorHandlerImplBase CreateCopy() {
            OEErrorHandlerImplBase copy = new MyErrorHandler();
            copy.swigReleaseOwnership();
            return copy;
        }
    }

    public void run() {
        // use the default error handler
        oechem.OEThrow.Warning("message 0");

        // create a new one
        oechem.OEThrow.SetHandlerImpl(new MyErrorHandler(), true);
        oechem.OEThrow.Warning("message 1");

        // create a local one
        MyErrorHandler hand = new MyErrorHandler();
        oechem.OEThrow.SetHandlerImpl(hand, false);
        oechem.OEThrow.Info("message 2");
    }

    public static void main(String argv[]) {
        CustomErrorHandler app = new CustomErrorHandler();
        app.run();
    }
}