Imports unresolved when manually configuring build path

Question

In attempting to create my first executable file using Maven I encountered problems and am now attempting to use install4j instead. In order to retain my dependencies, I have downloaded the jars listed in my pom.xml, added them to the build path, and removed pom.xml. Now, some of my jars seem not to have imported correctly. I have tried both the latest versions, and the older versions that were working fine in my maven project, neither work.

The ultimate problem I'm trying to solve is that when I built with install4j my exe wouldn't run, which I assumed to be due to the dependencies in my pom.xml not being included (as I wasn't building using maven)

These are my jars:

google-api-client-1.3.2.jar
google-api-services-sheets-v4-rev614-1.18.0-rc.jar
google-oauth-client-jetty-1.31.4.jar
commons-io-1.3.2.jar (don't think this is used)

These are the imports that are working:

import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.services.sheets.v4.Sheets;

These are the imports that are not working:

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;

This is a MRE of my code:

package misc;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Collections;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.sheets.v4.Sheets;

public class GoogleSheetsStuff {
    
    private static final String APPLICATION_NAME = "Google Sheets API Java Quickstart";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
    private static final String TOKENS_DIRECTORY_PATH = "tokens2";

    private static final List<String> SCOPES = Collections.singletonList(SheetsScopes.SPREADSHEETS);
    private static final String CREDENTIALS_FILE_PATH = "/credentials.json";

    private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {
        InputStream in = GoogleSheetsStuff.class.getResourceAsStream(CREDENTIALS_FILE_PATH);
        if (in == null) {
            throw new FileNotFoundException("Resource not found: " + CREDENTIALS_FILE_PATH);
        }
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
                HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
                .setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH)))
                .setAccessType("offline")
                .build();
        LocalServerReceiver receiver = new LocalServerReceiver.Builder().setPort(8888).build();
        return new AuthorizationCodeInstalledApp(flow, receiver).authorize("user");
    }

    public static Sheets buildService () throws GeneralSecurityException, IOException {
        final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
        Sheets service = new Sheets.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT))
                .setApplicationName(APPLICATION_NAME)
                .build();
        return service;
    }
}

Amit Amit · Accepted Answer · 2021-03-02T16:34:23

You don;t have to manually download and add jars to your classpath to be included in your project runtime. All you need is a Fat jar. Here is an example on how you can create one :-

http://tutorials.jenkov.com/maven/maven-build-fat-jar.html

Imports unresolved when manually configuring build path

1 Answers