I'm a newbie here. I have a simple problem in ONE java source file: the row System.out.pritln(...) has been treated as an erroneous expression. Here's the code snippet:
package vk.gui;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.Properties;
import com.itextpdf.text.BadElementException;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.BarcodeEAN;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPCellEvent;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
public class MatrixSheet1 {
Properties p;
File file;
Document document;
PdfWriter writer;
Image logo = null;
Image EANimg = null;
float mnoz = new Double(72/25.6).floatValue();
int IMG_WIDTH= new Double(35*mnoz).intValue();
int IMG_HEIGHT=new Double(35*mnoz).intValue();
String err=p.getProperty("cell.height");
System.out.println("Arrgh!"); ///-------------->ERROR!
float cell_Height = Float.parseFloat(p.getProperty("cell.height"))*mnoz;
float cell_Width = Float.parseFloat(p.getProperty("cell.width"))*mnoz;
The reported error is
Multiple markers at this line
Syntax error on token ""Arrgh!"", delete this token
Syntax error on token(s), misplaced construct(s)
The sout and sysout shortcuts do not work neither. In other existing source files of same package everything is OK, the shortcuts work and the expression does not trigger an error.
I tried to create another source file and copy/paste the content, but I got the same error. What and where went wrong?
I need the printing just for debugging, but this is a bit annoying symptom.
Thanks in advance.
This happens because you can use System.out.println() only inside methodes. If you would do something like this, it would work:
public class MatrixSheet1 {
Properties p;
File file;
Document document;
PdfWriter writer;
Image logo = null;
Image EANimg = null;
float mnoz = new Double(72/25.6).floatValue();
int IMG_WIDTH= new Double(35*mnoz).intValue();
int IMG_HEIGHT=new Double(35*mnoz).intValue();
String err=p.getProperty("cell.height");
systemMessage("Argh!");
float cell_Height = Float.parseFloat(p.getProperty("cell.height"))*mnoz;
float cell_Width = Float.parseFloat(p.getProperty("cell.width"))*mnoz;
private void systemMessage(String message){
System.out.println(message);
}
}
Related
im developing my Java bot for discord. And I want to send an image. I tried using TextChannel.sendFile(File, Message), but it`s not that result that I want to get. I want this file to be displayed like a normal image.
The imports:
import java.io.File;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ThreadLocalRandom;
import javax.xml.namespace.QName;
import javax.xml.stream.FactoryConfigurationError;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
import org.apache.commons.io.FileUtils;
import net.dv8tion.jda.core.MessageBuilder;
import net.dv8tion.jda.core.entities.Message;
import net.dv8tion.jda.core.entities.TextChannel;
import net.dv8tion.jda.core.events.message.MessageReceivedEvent;
And the other code:
URL url = new URL(s.toString());
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
XMLEventReader reader = XMLInputFactory.newInstance().createXMLEventReader(conn.getInputStream());
final List<String> files = new ArrayList<>();
while (reader.hasNext()) {
XMLEvent e = reader.nextEvent();
if (e.isStartElement()) {
StartElement se = e.asStartElement();
if (se.getName().getLocalPart().equals("post")) {
Attribute purl = se.getAttributeByName(new QName("file_url"));
files.add(purl.getValue());
}
}
}
int rid = ThreadLocalRandom.current().nextInt(files.size() - 1);
String p = files.get(rid);
files.clear();
URL u = new URL(p);
final String[] dots = p.split("\\.");
final String format = dots[dots.length - 1];
File f = new File("its not a porn." + format);
FileUtils.copyURLToFile(url, f);
Message m = new MessageBuilder().append("okay :)").build();
c.sendFile(f, m).queue();
}
I tried to find a solution somewhere but i haven found any info that could help.
At JDA 4.2.0_168
the message on sendFile() is the name of the file that you are sending to the discord servers, so it needs an extension
example:
File f = new File("image.png");
TextChannel.sendFile(f, "image.png").queue();
if you want comments in the message
File f = new File("image.png");
//the name doesn't need to be the same, just the same extension
TextChannel.sendFile(f, "another_name.png").append("okay :)").queue();
Result of last code
Reading through the docs, you need to create a MessageEmbed and add it to the message using m.setEmbed(..)
I'm solving a mathematical model using Java however when i tried to call the Benders Strategy i keep receiving this error:
Exception in thread "main" java.lang.IllegalArgumentException: No enum class ilog.cplex.cppimpl.IloCplex$IntParam with value 1501
at ilog.cplex.cppimpl.IloCplex$IntParam.swigToEnum(IloCplex.java:1974)
at ilog.opl.IloCplex.setParam(IloCplex.java:5640)
Here's a part of my code in Java (i'm using CPLEX 12.8 and the library oplall.jar) :
import ilog.concert.IloException;
import ilog.concert.IloIntMap;
import ilog.concert.IloIntSet;
import ilog.concert.IloSymbolSet;
import ilog.opl.IloCplex;
import ilog.opl.IloOplDataSource;
import ilog.opl.IloOplErrorHandler;
import ilog.opl.IloOplFactory;
import ilog.opl.IloOplModel;
import ilog.opl.IloOplModelDefinition;
import ilog.opl.IloOplModelSource;
import ilog.opl.IloOplSettings;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.PrintWriter;
...
IloOplFactory.setDebugMode(false);
IloOplFactory oplF = new IloOplFactory();
IloOplModelSource source = oplF.createOplModelSource("Model.mod");
IloOplDataSource dataSource = oplF.createOplDataSource("Instance.dat");
IloOplErrorHandler handler = oplF.createOplErrorHandler();
IloOplSettings settings = oplF.createOplSettings(handler);
IloOplModelDefinition def = oplF.createOplModelDefinition(source, settings);
IloCplex cplex = new IloCplex();
IloOplModel opl = oplF.createOplModel(def, cplex);
opl.addDataSource(dataSource);
cplex.setParam(IloCplex.IntParam.Benders.Strategy, 3);
opl.generate();
cplex.solve();
cplex.end();
There's a similar question here.
In model.mod you could write:
execute { cplex.bendersstrategy=3; }
I have integrated Stanford NER in UIMA and developed a pipeline.
The pipeline contains a FileSystemCollectionReader,an NERAnnotator and a CasConsumer but the output so come isn't desired. In my input directory i have two files and after running the pipeline, i get two files as ouput but the second file is getting merged with the first file in second ouput. I don't know what's happening here.
The code for CasConsumer:
`
package org.gds.uima;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.UUID;
import org.apache.uima.UimaContext;
import org.apache.uima.analysis_component.AnalysisComponent_ImplBase;
import org.apache.uima.analysis_component.CasAnnotator_ImplBase;
import org.apache.uima.analysis_component.JCasAnnotator_ImplBase;
import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.cas.CAS;
import org.apache.uima.cas.CASException;
import org.apache.uima.cas.Type;
import org.apache.uima.cas.text.AnnotationFS;
import org.apache.uima.fit.component.CasConsumer_ImplBase;
import org.apache.uima.fit.component.JCasConsumer_ImplBase;
import org.apache.uima.fit.descriptor.ConfigurationParameter;
import org.apache.uima.fit.util.CasUtil;
import org.apache.uima.jcas.JCas;
import org.apache.uima.resource.ResourceInitializationException;
public class CasConsumer extends JCasConsumer_ImplBase
{
public final static String PARAM_OUTPUT="outputDir";
#ConfigurationParameter(name = PARAM_OUTPUT)
private String outputDirectory;
public final static String PARAM_ANNOTATION_TYPES = "annotationTypes";
enter code here
#ConfigurationParameter(name = PARAM_ANNOTATION_TYPES,defaultValue="String")
public List<String> annotationTypes;
public void initialize(final UimaContext context) throws ResourceInitializationException
{
super.initialize(context);
}
#Override
public void process(JCas jcas)
{
String original = jcas.getDocumentText();
try
{
String onlyText="";
JCas sofaText = jcas.getView(NERAnnotator.SOFA_NAME);
onlyText = sofaText.getDocumentText();
String name = UUID.randomUUID().toString().substring(20);
File outputDir = new File(this.outputDirectory+"/"+name);
System.out.print("Saving file to "+outputDir.getAbsolutePath());
FileOutputStream fos = new FileOutputStream(outputDir.getAbsoluteFile());
PrintWriter pw = new PrintWriter(fos);
pw.println(onlyText);
pw.close();
}
catch(CASException cae)
{
System.out.println(cae);
}
catch(FileNotFoundException fne)
{
System.out.print(fne);
}
}
}
`
}
So I am receiving error messages as the XSSFWorkbook import appears to be incompatible with the final line. The code as it is gives the error message that package "org.apache.poi.xssf.usermodel.XSSFWorkbook" does not exist. When I remove the import, the last line then gets the error message that I should create an XSSFWorkbook class. I am currently using the Apache 3.7 utilmodel file in order to import the XSSFWorkbook class. Any help would be most appreciated. I am trying to create a program that reads data from an excel file.
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class ReadExcel {
private static final String FILE_PATH =
"/Users/riveraaz/Desktop/FantasyPros_2015_Overall.numbers";
public static List getPlayersFromExcel() {
List PlayerList = new ArrayList();
FileInputStream fis = null;
try {
fis = new FileInputStream(FILE_PATH);
Workbook workbook = new XSSFWorkbook(fis);
Hi I have created a PDF file with an image in it, I want to print my pdf after creating. Better if I have the PDF in memory instead of having a file, and then send it to the printer... Any Idea ?
I am using iText. Check my code:
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.PageSize;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfPrinterGraphics2D;
import com.lowagie.text.pdf.PdfTemplate;
import com.lowagie.text.pdf.PdfWriter;
import javax.imageio.ImageIO;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
private boolean exportToPdfThroughPNG(String fileName, float width, float height) throws DocumentException, IOException {
logger.debug("[boolean exportToPdfQuick() throws IOException, DocumentException]");
BufferedImage pngFile = createPngFile();
Document document = new Document();
document.setPageSize(new Rectangle(width, height));
PdfWriter.getInstance(document, new FileOutputStream(fileName));
document.open();
Image image = Image.getInstance(Toolkit.getDefaultToolkit().createImage(pngFile.getSource()), Color.WHITE);
document.add(image);
// If some day anyone wants to put text in the pdf. #Eduardo
// document.add(new Paragraph("title of the process"));
document.close();
return true;
}
Thanks in advance!
You can always use a ByteArrayOutputStream instead of a FileOutputStream.
After you have the PDF bytes, its a normal "how do you print in Java" question. Many printers (or at least their drivers) will take PDF directly these days, so at that point one could argue that you're done.
PS: Once I tagged your question "Java" it colored your code block using "import" as a keyword and so forth. Something to keep in mind in the future.