Custom RuntimeException not caught

I have my own ApplicationException witch extends RuntimeException:

package com.haslerrail.aura.common.exception;

public class ApplicationException extends RuntimeException {

    private static final long serialVersionUID = 1L;

    private final ErrorCode errorCode;

    private final Object[] arguments;

    public ApplicationException(final ErrorCode errorCode, final Object... arguments) {
        super();
        this.errorCode = errorCode;
        this.arguments = arguments;
    }

    public ErrorCode getErrorCode() {
        return errorCode;
    }

    public Object[] getArguments() {
        return arguments;
    }

}

This exception will be thrown be a function of my stateless bean:

public void doSomething()
        throws IOException, ApplicationException, InternalException {
    if (true) {
        throw new ApplicationException(ErrorCode.FILE_TYPE_NOT_SUPPORTED, "test");
    }
}

I would like to catch this runtimeException by my sessionScoped bean like this:

public void doXXX(final FileUploadEvent event) throws SystemException {
    try {

        myStatelessbean.doSomething();  // Throw my ApplicationExcetion

    } catch (final ApplicationException e) {
        System.out.println("catch ApplicationException");
    } catch (final Exception e) {
        System.out.println("catch Exception");
    }

}

My problem is, the exception is caught by the Exception and never by my own ApplicationException! I have no idea what i'm doing wrong....