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How to invoke a method of a class from another project by Rest Api in Java

I need to call a method from another project in eclipse, I tried to add the project to classpath of the current project (Right click on project -> properties -> java build path -> projects) but I got an error and exception (java.lang.NoClassDefFoundError) and ( java.lang.ClassNotFoundException) and I couldn't fix that. I know there is another way to do this job by using Rest Api. please help me!! Thanks.
I want to call (getSample2) to my current project:
public List<String> getSample2 (String fileName, int minFrequency, int maxFrequency) {
List<SampleMultyFreq> fd = getSamples(fileName, minFrequency, maxFrequency);
List<String> ls = new ArrayList<>();
for(SampleMultyFreq ss: fd) {
ls.add(ss.getFrequencies().toString());
}
return ls;
}
I created this method in the same project with (getsample2) for calling (getSample2) method easy. I don't know it is a right way or not.
#GET
#Path("GET_SAMPLE_API")
public Response getSampleApi (String fileName) {
List<String> ss = new DataReader2NewPods().getSample2(fileName, 1, 9);
return Response.status(Response.Status.OK).entity(ss).build();
}
and Finally I wrote this method in my current project for sending request to get (getSampleApi) like this but I don't know the methods that I used is correct or not I copied another method that was for download a file from AWS cloud by using rest api:
public String getSampleMethdByRest (String fileName) {
if (StringUtils.isNoneBlank(fileName)) {
System.out.println(" print to test 1:");
String url = "http://localhost:8080/project-dev/ss/GET_SAMPLE_API/";
final Response resp = client.target(url).request(MediaType.APPLICATION_OCTET_STREAM).get(Response.class);
if (resp.getStatus() == Response.Status.OK.getStatusCode()) {
System.out.println(" print to test 2:");
InputStream inputStream = (InputStream)resp.getEntity();
}
}
System.out.println(" print to test 3:");
return Constants.root + File.separator +
Config.getInstance().getProperties().getProperty("temp_folder") + File.separator + fileName;
}
and this is the output:
print to test 1:
print to test 3:
C:\home\project\temp_folder\data_98F4ABFB7806_16480262_1595325764285_len_2528.txt
Would you please help me. many thanks in advance.

Jsoup behaves different from my test PC and the server

I'm testing a web crawler with JSoup. The issue comes when I test the crawler on a regular PC, and works as expected, then I export this web crawler as a jar to work in a server in a cron job. This where the things go wrong.
The code is the same, no changes. The data I'm trying to extract is different comments from the users of how they rate a service, the problem is that the web crawler behaves differently when it's executed in the server, for example: the comments are duplicated, something that doesn't happened when I'm testing the program locally.
Also the web crawler differentiates what language the comments are written (I take that info from the URL, .de for German, .es for Spanish, etc). This info get mixed for example, a comment in Spanish is classified as Portuguese one.
Again I repeat the logic behind the crawler is correct, I tested many times with different input.
What could be the problem behind these issues?
Additional notes:
No exceptions/crashes.
I'm using jsoup 1.9.2.
This is how I get the data from the website:
Document doc = Jsoup.connect(link).userAgent(FakeAgentBooking.getAgent()).timeout(60 * 4000).get();
I already tried to use a proxy just in case the server was banned.
System.getProperties().put("https.proxyHost", "PROXY");
System.getProperties().put("https.proxyPort", "PORT");
System.getProperties().put("https.proxyUser", "USER");
System.getProperties().put("https.proxyPassword", "PASSWORD");
This is the code of the cron job:
#Crawler(name = "Booking comments", nameType = "BOOKING_COMMENTS", sentimetal = true, cron = "${cron.booking.comments}")
public class BookingCommentsJob extends MotherCrawler {
private static final org.slf4j.Logger logger = LoggerFactory.getLogger(BookingCommentsJob.class);
#Value("${full.booking.comments}")
private String full;
#Autowired
private ComentariosCDMXRepository comentariosCDMXRepository;
#Override
#PostConstruct
public void init() {
setInfo(this.getClass().getAnnotation(Crawler.class));
}
#Override
public void exec(int num) {
// <DEBUG>
String startTime = time.format(new Date());
// </DEBUG>
Set<CrawQuery> li = queryManager.getMeQueries(type, num, threadnum);
Gson gson = new GsonBuilder().create();
for (CrawQuery s : li) {
String query = s.getQuery().get("query");
try {
//the crawling begins here-->
String result = BookingComentarios.crawlBookingComentarios(query, Boolean.parseBoolean(full));
//get the result from json to a standarized class
ComentarioCDMX[] myComments = gson.fromJson(result, ComentarioCDMX[].class);
for (ComentarioCDMX myComment : myComments) {
//evaluates if the comment is positive, neutral or negative.
Integer sentiment = sentimentAnalysis.classifyVector(myComment.getComment());
myComment.setSentiment(sentiment);
myComment.setQuery(query);
/* <Analisis de sentimiento /> */
comentariosCDMXRepository.save(myComment);
}
s.setStatus(true);
} catch (Exception e) {
logger.error(query, e);
s.setStatus(false);
mailSend.add(e);
} finally {
s.setLastUse(new Date());
//Saves data to Solr
crawQueryDao.save(s);
}
}
update();
// <DEBUG>
String endTime = time.format(new Date());
logger.info(name + " " + num + " > Inicio: " + startTime + ", Fin: " + endTime);
// </DEBUG>
}
#Scheduled(cron = "${cron.booking.comments}")
public void curro0() throws InterruptedException {
exec(0);
}
}
and this is when the code should be executed:
cron.booking.comments=00 30 02 * * *
Additional notes:
The test PC OS is Windows 7 and the server OS is linux Debian 3.16.7. and tghe java version in the test PC is 1.7 oracle JDK and on the server is 1.8.0 JRE.

How to use JCo connection without creating *.JcoDestination file

I'm trying to connect to SAP ECC 6.0 using JCo. I'm following this tutorial. However, there is a Note saying:
For this example the destination configuration is stored in a file that is called by the program. In practice you should avoid this for security reasons.
And that is reasonable and understood. But, there is no explenation how to set up secure destination provider.
I found solution in this thread that created custom implementation of DestinationDataProvider and that works on my local machine. But when I deploy it on Portal I get an error saying that there is already registered DestinationDataProvider.
So my question is:
How to store destination data in SAP Java EE application?
Here is my code to further clarify what I'm trying to do.
public static void main(String... args) throws JCoException {
CustomDestinationProviderMap provider = new CustomDestinationProviderMap();
com.sap.conn.jco.ext.Environment.registerDestinationDataProvider(provider);
Properties connectProperties = new Properties();
connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, "host.sap.my.domain.com");
connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR, "00");
connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, "100");
connectProperties.setProperty(DestinationDataProvider.JCO_USER, "user");
connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, "password");
connectProperties.setProperty(DestinationDataProvider.JCO_LANG, "en");
provider.addDestination(DESTINATION_NAME1, connectProperties);
connect();
}
public static void connect() throws JCoException {
String FUNCTION_NAME = "BAPI_EMPLOYEE_GETDATA";
JCoDestination destination = JCoDestinationManager.getDestination(DESTINATION_NAME1);
JCoContext.begin(destination);
JCoFunction function = destination.getRepository().getFunction(FUNCTION_NAME);
if (function == null) {
throw new RuntimeException(FUNCTION_NAME + " not found in SAP.");
}
//function.getImportParameterList().setValue("EMPLOYEE_ID", "48");
function.getImportParameterList().setValue("FSTNAME_M", "ANAKIN");
function.getImportParameterList().setValue("LASTNAME_M", "SKYWALKER");
try {
function.execute(destination);
} catch (AbapException e) {
System.out.println(e.toString());
return;
}
JCoTable table = function.getTableParameterList().getTable("PERSONAL_DATA");
for (int i = 0; i < table.getNumRows(); i++) {
table.setRow(i);
System.out.println(table.getString("PERNO") + '\t' + table.getString("FIRSTNAME") + '\t' + table.getString("LAST_NAME")
+'\t' + table.getString("BIRTHDATE")+'\t' + table.getString("GENDER"));
}
JCoContext.end(destination);
}

Ok, so I got this up and going and thought I'd share my research.
You need to add your own destination in Portal. To achieve that you need to go to NetWeaver Administrator, located at: host:port/nwa. So it'll be something like sapportal.your.domain.com:50000/nwa.
Then you go to Configuration-> Infrastructure-> Destinations and add your destination there. You can leave empty most of the fields like Message Server. The important part is Destination name as it is how you will retrieve it and destination type which should be set to RFC Destination in my case. Try pinging your newly created destination to check if its up and going.
Finally you should be able to get destination by simply calling: JCoDestination destination = JCoDestinationManager.getDestination(DESTINATION_NAME); as it is added to your Portal environment and managed from there.

Take a look at the CustomDestinationDataProvider in the JCo examples of the Jco connector download. The important parts are:
static class MyDestinationDataProvider implements DestinationDataProvider
...
com.sap.conn.jco.ext.Environment.registerDestinationDataProvider(new MyDestinationDataProvider());
Then you can simply do:
instance = JCoDestinationManager.getDestination(DESTINATION_NAME);
Btw. you may also want to check out http://hibersap.org/ as they provide nice ways to store the config as well.

Java System Parameter causing NoClassDefFoundError

I have a class which takes in various system parameters and prints them out:
public class Test_Class {
public static void main(String[] args){
String fooA = System.getProperty("fooA");
String fooB = System.getProperty("fooB");
String fooC = System.getProperty("fooC");
System.out.println("System Properties:\n"+fooA+"\n"+foob+"\n"+fooC+"\n");
}
}
Then, using IntelliJ, pass in the VM Parameters as such:
-DfooA="StringA" -DfooB="StringB" -DfooC="String C"
Upon running my program I get the following output:
System Properties:
StringA
StringB
String C
Now, if I run the same program through a UNIX server by running the following command:
java -DfooA="StringA" -DfooB="StringB" -DfooC="String C" com.foo.fooUtil.Test_Class
I get the following error:
Exception in thread "main" java.lang.NoClassDefFoundError: C
I have tried a bunch of different ways to pass in fooC, such as -DfooC=\"String C\", -DfooC='String C', -DfooC=\'String C\', basically any idea that came to mind. I have done some research and have been unable to find any solid solution.
For reference, I found the following link online where another person seems to have the same issue but, unfortunately, none of the suggestions work.
http://www.unix.com/shell-programming-scripting/157761-issue-spaces-java-command-line-options.html
How can I pass in a System Parameter with spaces in UNIX? Thank you.

Here is my approach: Why not use a .properties file for storing the system properties instead of passing them through command line? You can access the properties using:
Properties properties = new Properties();
try {
properties.load(new FileInputStream("path/filename"));
} catch (IOException e) {
...
}
And you may iterate as:
for(String key : properties.stringPropertyNames()) {
String value = properties.getProperty(key);
System.out.println(key + " => " + value);
}
Hope that helps!!!

Checking domain name age through Java

I am making a simple phishing scanner tool for a university project. One of my detection methods includes checking if the DNS within the email are valid, and I also want to check their age. This is example code of how I check if they are existing:
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import java.util.Hashtable;
public class DNSExample {
static int doLookup( String hostName ) throws NamingException {
Hashtable env = new Hashtable();
env.put("java.naming.factory.initial",
"com.sun.jndi.dns.DnsContextFactory");
DirContext ictx = new InitialDirContext( env );
Attributes attrs =
ictx.getAttributes( hostName, new String[] { "MX" });
Attribute attr = attrs.get( "MX" );
if( attr == null ) return( 0 );
return( attr.size() );
}
public static void main( String args[] ) {
String [] array = {"google.com","dsad33114sssaxzx.com"} ;
for( int i = 0; i < array.length; i++ ) {
try {
System.out.println( array[i] + " has " +
doLookup( array[i] ) + " mail servers" );
}
catch( Exception e ) {
System.out.println(array[i] + " : " + e.getMessage());
}
}
}
}
How would I need to modify the above code to include a check of age
for servers that exist?

I think you've chosen a problem that cannot be solved in the general case ... using current generation internet standards:
The information you need cannot be obtained from DNS itself.
In some cases information about DNS registrations can be obtained from WHOIS. However, the information returned by WHOIS servers is not standardised:
There is no standard information model.
There is no standard format.
There are no guarantees as to the accuracy of the information.
It is not even clear if "age of server" is going to be available. (For instance, the closest that APNIC's WHOIS provides to that is the last modification timestamp for the DNS record. And that is NOT a good proxy for server age.)
There is a set of RFC's that define something called CRISP, but as far as I can make out the purpose of that standard is for registrar to registrar exchange of information. (I couldn't find any public-facing services based on CRISP.)
There is also an IETF working group called WEIRDS which I think is intended to define a web-enabled replacement for WHOIS. (Don't confuse WEIRDS with the IETF WEIRD WG!) But that was formed very recently, and it is too soon to make any predictions of the outcome. (Or how long it will take for the NICs to implement any specs that come out of the WG.)
Summary: your chances of implementing something in this space that really works are currently low. Probably the best you can hope to achieve is something based on screen-scraping one or two WHOIS services.
This might change in a few years, but that is of no help for your current project.

It seems based on your description and comments above you are trying to gather whois information.
download APIs from http://commons.apache.org/proper/commons-net/
change the nameToQuery below and run it.
public class WhoisIt {
public static final String WHOIS_SERVER = "whois.internic.net";
public static final int WHOIS_PORT = 43;
public static void main(String[] args) throws Exception {
String nameToQuery = "avajava.com";
WhoisClient whoisClient = new WhoisClient();
whoisClient.connect(WHOIS_SERVER, WHOIS_PORT);
String results = whoisClient.query(nameToQuery);
System.out.println(results);
}
}
good luck