Develop Reference

sarxos webcam-capture-live-streaming example error: package us.sosia.video.stream.agent.ui does not exist

I want to make a webcam capture software and a stream software using sarxos's webcam library. Wanting to understand the examples first i don't know what to change or add in order to go past this error at import us.sosia.
package us.sosia.video.stream.agent.ui does not exist
package us.sosia.video.stream.handler
Maybe i have to make a Marvin project and change the pow.xml file but i don't know how to do this and still add my sarxos library to the Marvin project using NetBeans.
first class is StreamServer:
package us.sosia.video.stream.agent;
import java.awt.Dimension;
import java.net.InetSocketAddress;
import com.github.sarxos.webcam.Webcam;
public class StreamServer {
/**
* #author kerr
* #param args
*/
public static void main(String[] args) {
Webcam.setAutoOpenMode(true);
Webcam webcam = Webcam.getDefault();
Dimension dimension = new Dimension(320, 240);
webcam.setViewSize(dimension);
StreamServerAgent serverAgent = new StreamServerAgent(webcam, dimension);
serverAgent.start(new InetSocketAddress("localhost", 20000));
}
}
Second class is StreamClient:
package us.sosia.video.stream.agent;
import java.awt.Dimension;
import java.awt.image.BufferedImage;
import java.net.InetSocketAddress;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import us.sosia.video.stream.agent.ui.SingleVideoDisplayWindow;
import us.sosia.video.stream.handler.StreamFrameListener;
public class StreamClient {
/**
* #author kerr
* */
private final static Dimension dimension = new Dimension(320,240);
private final static SingleVideoDisplayWindow displayWindow = new SingleVideoDisplayWindow("Stream example",dimension);
protected final static Logger logger = LoggerFactory.getLogger(StreamClient.class);
public static void main(String[] args) {
//setup the videoWindow
displayWindow.setVisible(true);
//setup the connection
logger.info("setup dimension :{}",dimension);
StreamClientAgent clientAgent = new StreamClientAgent(new StreamFrameListenerIMPL(),dimension);
clientAgent.connect(new InetSocketAddress("localhost", 20000));
}
protected static class StreamFrameListenerIMPL implements StreamFrameListener{
private volatile long count = 0;
#Override
public void onFrameReceived(BufferedImage image) {
logger.info("frame received :{}",count++);
displayWindow.updateImage(image);
}
}
}
I need a way to go past this error.
Thanks in advance.

your first 2 lines in both files are:
package us.sosia.video.stream.agent;
This means that these files should be in the following path
"/us/sosia/video/stream/agent/"
Remove this line from both files.

Instance "Main" Method Not Running When Called from Another Class

I'm learning Java and experimenting with Javafx in netbeans.
I am running the sqlite tutorial here: http://www.tutorialspoint.com/sqlite/sqlite_java.htm
When set up as a lone-file it works fine of course.
I'm setting it up in a test project "testDB" and for some reason when I initiate the class the class itself is recognized, but main() is not running.
Here is the testdb file itself:
testDB.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package sqlitetest;
import java.sql.*;
/**
*
*/
public class testDB {
public static void main(String args[]) {
//THESE STEPS ARE ON NOT RUNNING (compiles without errors)
System.out.println("testing");
Connection c = null;
try {
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:test.db");
} catch (Exception e) {
System.err.println(e.getClass().getName() + ": " + e.getMessage());
System.exit(0);
}
System.out.println("Opened database successfully");
}
public void makeStuff(){
}
}
sqlitetest.java
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package sqlitetest;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
/**
*
*/
public class Sqlitetest extends Application {
#Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
testDB test = new testDB();
test.makeStuff();
launch(args);
}
}

I think you are getting confused between a constructor and a main method.
A main method is only invoked when you start the JVM, running that specific class (or if you invoke it explicitly elsewhere).
A constructor is invoked when you create an instance of the class, like you are doing here.
In testdb, change:
public static void main(String args[]) {
to
public testdb() {
Alternatively, invoke testdb.main(args) (or with some other parameter) in Sqlitetest.main.

How to call java methods in testng class

I am getting error in testng report:
I followed the below steps
I wrote all my testcases in java methods and used java verifications like if else to pass my testcases
2.I created one testng class, in the testng class i called my all java methods
I executed the testng class this class contain around 30 java methods, each and every method is one testcase.
If i execute that class reports generated for testng based annotations, it does not consider the java methods into testcases, how can i call my all java methods? i need to generate reports for my java methods
Here is my code :
import java.io.FileNotFoundException;
import java.io.IOException;
import jxl.read.biff.BiffException;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
public class DocumentSearchTest {
WebElements webEleObj;
/*
* AllLetter Lettobj ; AllSearch allseObj; AllTranscript TraObj;
*/
FrameSearchExported fseObj;
TextBoxSearch textObj;
DateSinceSearch dateSinceObj;
/*
* public void loginTest() throws FileNotFoundException, BiffException,
* IOException, InterruptedException {
* webEleObj.textbox(webEleObj.properties
* ("Username"),webEleObj.excelRead(1,2,1));
* webEleObj.textbox(webEleObj.properties
* ("Password"),webEleObj.excelRead(2,2,1)); webEleObj.sleep(5000);
* webEleObj.button(webEleObj.properties("Login")); webEleObj.sleep(20000);
*
* }
*/
#BeforeClass
public void start() throws FileNotFoundException, BiffException,
IOException, InterruptedException, RowsExceededException,
WriteException {
// Assert.assertEquals(true, true, "Loggend into application");
webEleObj = new WebElements();
/*
* allseObj = new AllSearch(webEleObj); Lettobj = new
* AllLetter(webEleObj); TraObj =new AllTranscript(webEleObj);
*/
fseObj = new FrameSearchExported(webEleObj);
textObj = new TextBoxSearch(webEleObj);
dateSinceObj = new DateSinceSearch(webEleObj);
webEleObj.browserLaunch();
webEleObj.loginTest();
webEleObj.sleep(20000);
webEleObj.setUpApp();
// webEleObj.excelwrite(4);
System.out.println("hi logged in");
}
#Test
public void ts_1() throws FileNotFoundException, IOException,
InterruptedException, RowsExceededException, BiffException,
WriteException {
webEleObj.sleep(10000);
System.out.println("First TestCase---->");
fseObj.allexportedSearch();
fseObj.letterexportedSearch();
fseObj.transcriptexportedSearch();
fseObj.allnotexpSearch();
fseObj.letternotexpSearch();
fseObj.transcriptnotexpSearch();
fseObj.allsignsearch();
fseObj.lettersignSearch();
fseObj.transcriptsignSearch();
fseObj.allnotsignSearch();
fseObj.letternotsignSearch();
fseObj.transcriptnotsignSearch();
System.out.println("Document Search Test Case Completed");
}
/*
* #Test(enabled=false) public void ts_2() throws FileNotFoundException,
* BiffException, IOException, InterruptedException, RowsExceededException,
* WriteException { System.out.println("Second TestCase---->");
* textObj.accountNo_All(); textObj.accountNo_Letter();
* textObj.accountNo_Transcript(); textObj.firstName_All();
* textObj.firstName_Letter(); textObj.firstName_Transcript();
* textObj.lastName_All(); textObj.lastName_Letter();
* textObj.lastName_Transcript();
*
* }
*/
#Test
public void ts_3() throws FileNotFoundException, IOException,
InterruptedException, RowsExceededException, BiffException,
WriteException {
// webEleObj.sleep(10000);
System.out.println("Third TestCase---->");
dateSinceObj.datesinceAll_Today();
dateSinceObj.datesinceAll_Yesterday();
dateSinceObj.datesinceAll_ThisMonth();
dateSinceObj.datesinceAll_LastMonth();
dateSinceObj.datesinceAll_ThisYear();
dateSinceObj.datesinceAll_LastYear();
dateSinceObj.datesinceLetter_Today();
dateSinceObj.datesinceLetter_Yesterday();
dateSinceObj.datesinceLetter_ThisMonth();
dateSinceObj.datesinceLetter_LastMonth();
dateSinceObj.datesinceLetter_ThisYear();
dateSinceObj.datesinceLetter_LastYear();
dateSinceObj.datesinceTranscript_Today();
dateSinceObj.datesinceTranscript_Yesterday();
dateSinceObj.datesinceTranscript_ThisMonth();
dateSinceObj.datesinceTranscript_LastMonth();
dateSinceObj.datesinceTranscript_ThisYear();
dateSinceObj.datesinceTranscript_LastYear();
// logOut();
}
}

You could use a jUnit testSuite where you can define all the test classes you want to run at the same time:
import org.junit.runner.RunWith;
import org.junit.runners.Suite;
import org.junit.runners.Suite.SuiteClasses;
#RunWith(Suite.class)
#SuiteClasses({ MyClassTest.class, MySecondClassTest.class })
public class AllTests {
}
You can find more info # Vogella http://www.vogella.com/articles/JUnit/article.html#juniteclipse_testsuite

Here is your code for calling any java methods in testing class:--
Class A
public class A {
static void method1()
{
System.out.println("Selenium_1");
}
static void method2()
{
System.out.println("Selenium_1");
}
}
Class B
public class B extends A {
public static void main(String ar[])
{
method1();
method2();
}
}

Java-Sandbox example throwing java.lang.NoClassDefFoundError

Anyone with experience using Java-Sandbox, I have implemented one of the basic examples found in the documentation but i cant get it working.
Code:
SandPlayground.java
import java.util.concurrent.TimeUnit;
import net.datenwerke.sandbox.*;
import net.datenwerke.sandbox.SandboxContext.AccessType;
import net.datenwerke.sandbox.SandboxContext.RuntimeMode;
import net.datenwerke.sandbox.SandboxedEnvironment;
public class SandPlayground {
/**
* #param args
*/
public static void main(String[] args) {
System.out.println("Running...");
SandboxService sandboxService = SandboxServiceImpl.initLocalSandboxService();
// configure context
SandboxContext context = new SandboxContext();
//context.setRunRemote(true);
context.setRunInThread(true);
context.setMaximumRunTime(2, TimeUnit.SECONDS, RuntimeMode.ABSOLUTE_TIME);
context.addClassPermission(AccessType.PERMIT, "java.lang.System");
context.addClassPermission(AccessType.PERMIT, "java.io.PrintStream");
//run code in sandbox
SandboxedCallResult<String> result = sandboxService.runSandboxed(MyEnvironment.class, context, "This is some value");
// output result
System.out.println(result.get());
}
}
MyEnvironment.java
import net.datenwerke.sandbox.SandboxedEnvironment;
public class MyEnvironment implements SandboxedEnvironment<String> {
private final String myValue;
public MyEnvironment(String myValue){
this.myValue = myValue;
}
#Override
public String execute() throws Exception {
/* run untrusted code */
System.out.println(myValue);
/* return some value */
return "This is a different value";
}
}
And I'm getting the error:
EDIT: I've included the dependencies, but I'm still getting some errors:
With the code above I get:
Exception in thread "main" net.datenwerke.sandbox.exception.SandboxedTaskKilledException: killed task as maxmimum runtime was exceeded
at net.datenwerke.sandbox.SandboxMonitorDaemon.testRuntime(SandboxMonitorDaemon.java:82)
at net.datenwerke.sandbox.SandboxMonitorDaemon.run(SandboxMonitorDaemon.java:57)
at java.lang.Thread.run(Thread.java:724)
and when i remove the context.setMaximumRunTime() call, I get:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/collections/map/IdentityMap ...
Any help is much appreciated.

most likely you are missing the javassist library (see the documentatio of the sandbox for dependencies: http://blog.datenwerke.net/p/the-java-sandbox.html). You'll find the javassist library on sourceforge at: https://sourceforge.net/projects/jboss/files/Javassist/
The javaassist library is used to remove finalizers in loaded code. This can be turned off in the sandbox context:
contex.setRemoveFinalizers(false)
Hope this helps.

Error in simple Java application

Just playing around with java trying to learn it etc.
Here is my code so far, using HtmlUnit.
package hsspider;
import com.gargoylesoftware.htmlunit.WebClient;
/**
* #author
*/
public class Main {
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
System.out.println("starting ");
Spider spider = new Spider();
spider.Test();
}
}
package hsspider;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
/**
* #author
*/
public class Spider {
public void Test() throws Exception
{
final WebClient webClient = new WebClient();
final HtmlPage page = webClient.getPage("http://www.google.com");
System.out.println(page.getTitleText());
}
}
I am using Netbeans.
I can't seem to figure out what the problem is, why doesn't it compile?
The error:
C:\Users\mrblah\.netbeans\6.8\var\cache\executor-snippets\run.xml:45:
Cancelled by user.
BUILD FAILED (total time: 0 seconds)
The row in the xml is:
<translate-classpath classpath="${classpath}" targetProperty="classpath-translated" />

Test is declared to throw Exception. If you add "throws Exception" to your main method it should compile. For example:
/**
* #param args the command line arguments
*/
public static void main(String[] args) throws Exception {
System.out.println("starting ");
Spider spider = new Spider();
spider.Test();
}

What Steve said is correct. But maybe there are some problems with the uppercase character of Test. A method always starts with a lower case character. So test would be better.

Unchecking the "Compile on Save" option of the "Properties" tab in Netbeans 7.1.2 resolved a similar error message for me.