I want to import packages that my friend created for his project to my project. What should I do to import that package. Do I have to create library file and include those in my project ?
import <the complete package name>
like
import java.util.LinkedList;
import java.util.Queue;
if you want to do static import than:
import static java.lang.Math.PI;
Do you need something else?
You have to add the external jars in the classpath and then you will be able to import the classes they provide.
import fully.qualified.class.name.from.external.jar.ClassName;
packagee line should be a first line of you program.
if you want load all classes of package the use below line.
import packagename.*;
if you want to import single class of package use
import packagename.classname;
Related
I'm running the API 3 with Java from Windows command using javac and java to compile, no problem. I'm trying the API 4 but can't make even the basic example to run. I understand my problem must be in the classpath but can't pinpoint on the problem. Can't see the com.google packages
I downloaded the API 4 Java Client, copied all .jar in libs to a folder libs in my project. Also copied google-api-services-analyticsreporting-v4-rev110-1.22.0.jar to the libs
I'm testing the service account example as in
https://developers.google.com/analytics/devguides/reporting/core/v4/quickstart/service-java
I setup the compiler as (I know the path exists)
javac -classpath ".;C:\Java\GAnalytics\libs\*" HelloAnalytics4.java
I also tried adding the subdirectories in the client
Error Package does not exit:
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.gson.GsonFactory;
import com.google.analyticsreporting.v4.AnalyticsreportingScopes;
import com.google.analyticsreporting.v4.Analyticsreporting;
import com.google.analyticsreporting.v4.model.ColumnHeader;
import com.google.analyticsreporting.v4.model.DateRange;
import com.google.analyticsreporting.v4.model.DateRangeValues;
import com.google.analyticsreporting.v4.model.Dimension;
import com.google.analyticsreporting.v4.model.GetReportsRequest;
import com.google.analyticsreporting.v4.model.GetReportsResponse;
import com.google.analyticsreporting.v4.model.Metric;
import com.google.analyticsreporting.v4.model.MetricHeaderEntry;
import com.google.analyticsreporting.v4.model.Report;
import com.google.analyticsreporting.v4.model.ReportRequest;
import com.google.analyticsreporting.v4.model.ReportRow;
What am I missing?
Same problem for me, I solved by substituting all
"com.google.analyticsreporting.v4" ---> "com.google.api.services.analyticsreporting.v4"
and also:
Analyticsreporting --> AnalyticsReporting
Here the screen of the google-api-services-analyticsreporting-v4-rev111-1.22.0.jar unzipped
I need to import the Arrays utilities for use in some code I am writing, however, when I type in "import java.util.Arrays" , the word "Arrays" does not turn blue. I'm guessing this means I can not import it but why is this? Since the word does not turn blue does that indicate that I do not have the package or whatever? Should it not be included in the java files I downloaded when installing Jcreator?
the package is util not utils so import
import java.util.Arrays
Docs
You have to use import java.util.Arrays; or import java.util.*. The latter imports all the classes within the util package.
I am trying to import following packages in my .java file:-
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
I am getting error that the above mentioned packages do not exist.
You need to download elastic search jar to make it work. Download it from here.
And add it to your classpath.
What do I need to do to successfully the import ij package? I get an error:
ITCN_.java:1: package ij does not exist
The imports are:
import ij.*;
import ij.io.*;
import ij.gui.*;
import ij.process.*;
import ij.measure.*;
import ij.plugin.*;
import ij.plugin.frame.*;
import ij.plugin.filter.PlugInFilter;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.lang.*;
import java.text.*;
I also used Jgrasp back in the day.
I highly recommend moving to eclipse although jGrasp is very simple and works.
To Add to the Build Path you go to Settings -> PATH/CLASSPATH -> Workspace
Click on the "Path" tab, and then the "CLASSPATHS" subtab.
Then Click "New" and where it says Path or Jar file, enter in the path to the ij jar file. Do this for each file if there are more than one.
And then click "apply" and you should be able to use import ij.* and the subsequent functions
It's the ImageJ API. The API docs are available here. You can download it here. Once downloaded, just add the JAR(s) to the compiletime and runtime classpath.
I m building an android application where I need these packages to import:
import com.sun.cnpi.rss.elements.Item;
import com.sun.cnpi.rss.elements.Rss;
import com.sun.cnpi.rss.parser.RssParser;
import com.sun.cnpi.rss.parser.RssParserException;
import com.sun.cnpi.rss.parser.RssParserFactory;
What should I do? From where can I find these packages?
You will need to download rss_utils_1.1.zip as seen in this tutorial.