Java Question Please Where is the mistake??

lindomar · Feb 20, 2013

Here simple code library in Eclipse: :signOops:
Use only file itextpdf-5.3.3.jar

PHP:

package com.digitline.txtofpdf;

import java.io.IOException;

import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.parser.PdfReaderContentParser;
import com.itextpdf.text.pdf.parser.SimpleTextExtractionStrategy;
import com.itextpdf.text.pdf.parser.TextExtractionStrategy;

//import anywheresoftware.b4a.BA.DependsOn;
import anywheresoftware.b4a.BA.ShortName;
import anywheresoftware.b4a.BA.Version;

@ShortName("TXTofPDF")
@Version(1)
//@DependsOn(values = {"itextpdf-5.3.3.jar"})
public class TXTofPDF {
   //Extract text of pdf in page
   public String readTextForPDF(String pdfFile, Integer page) throws IOException {   
      PdfReader reader = new PdfReader(pdfFile);
        PdfReaderContentParser parser = new PdfReaderContentParser(reader);        
        TextExtractionStrategy strategy;        
        strategy = parser.processContent(page, new SimpleTextExtractionStrategy());                
        reader.close();      
      return strategy.getResultantText();
   }   
}

Here simple code in B4A... :signOops:

B4X:

#Region  Project Attributes 
   #ApplicationLabel: B4A Example
   #VersionCode: 1
   #VersionName: 
   'SupportedOrientations possible values: unspecified, landscape or portrait.
   #SupportedOrientations: unspecified
   #CanInstallToExternalStorage: False
#End Region

#Region  Activity Attributes 
   #FullScreen: False
   #IncludeTitle: True
#End Region

Sub Process_Globals
   'These global variables will be declared once when the application starts.
   'These variables can be accessed from all modules.
      
End Sub

Sub Globals
   'These global variables will be redeclared each time the activity is created.
   'These variables can only be accessed from this module.
   Dim extractTXT    As TXTofPDF
   Dim EditText1      As EditText
End Sub

Sub Activity_Create(FirstTime As Boolean)
   'Do not forget to load the layout file created with the visual designer. For example:
   Activity.LoadLayout("Layout1")
   EditText1.Text = extractTXT.readTextForPDF("/mnt/extsd/aula.pdf", 7)   
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

Here simple code project in Eclipse Works: :sign0098:
Use only file itextpdf-5.3.3.jar

PHP:

package com.example.exttxtofpdf;

import java.io.IOException;

import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.parser.PdfReaderContentParser;
import com.itextpdf.text.pdf.parser.SimpleTextExtractionStrategy;
import com.itextpdf.text.pdf.parser.TextExtractionStrategy;

import android.os.Bundle;
import android.widget.EditText;
import android.app.Activity;

public class MainActivity extends Activity {
      
   /** The original PDF that will be parsed. */
    public static final String PREFACE = "/mnt/extsd/aula.pdf";
    
   @Override
   public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);                        
        try {
                this.parsePdf(PREFACE, 7);                
        } catch(Exception e) {
                System.out.println("Error loading pdf" + e);
        }
   }
   
   public void parsePdf(String pdf, Integer page) throws IOException {
        PdfReader reader = new PdfReader(pdf);
        PdfReaderContentParser parser = new PdfReaderContentParser(reader);
        TextExtractionStrategy strategy;
        strategy = parser.processContent(page, new SimpleTextExtractionStrategy());
        reader.close();
        EditText text1 = (EditText) findViewById(R.id.editText1);
        text1.setText(strategy.getResultantText());        
    }   
}

Download iTextpdf library .jar here...
Select a mirror

Create folder lib and add itextpdf-5.3.3.jar

I'm not a good programmer Eclipse. :sign0013:

Error in LogCat:

LogCat connected to: 192.168.1.10:5555
--------- beginning of /dev/log/system

--------- beginning of /dev/log/main

** Activity (main) Create, isFirst = true **

main_activity_create (java line: 234)
java.lang.NoClassDefFoundError: com.itextpdf.text.pdf.PdfReader
at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:21)
at digitline.txtofpdf.main._activity_create(main.java:234)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Create, isFirst = true **
main_activity_create (java line: 234)
java.lang.NoClassDefFoundError: com.itextpdf.text.pdf.PdfReader
at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:21)
at digitline.txtofpdf.main._activity_create(main.java:234)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Create, isFirst = true **

main_activity_create (java line: 234)
java.lang.NoClassDefFoundError: com.itextpdf.text.pdf.PdfReader
at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:21)
at digitline.txtofpdf.main._activity_create(main.java:234)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Create, isFirst = true **
main_activity_create (java line: 234)
java.lang.NoClassDefFoundError: com.itextpdf.text.pdf.PdfReader
at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:21)
at digitline.txtofpdf.main._activity_create(main.java:234)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
** Activity (main) Create, isFirst = true **
main_activity_create (java line: 234)
java.lang.Error: Unresolved compilation problem:
Unhandled exception type IOException

at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:20)
at digitline.txtofpdf.main._activity_create(main.java:234)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Create, isFirst = true **
main_activity_create (java line: 234)
java.lang.Error: Unresolved compilation problem:
Unhandled exception type IOException

at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:20)
at digitline.txtofpdf.main._activity_create(main.java:234)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Create, isFirst = true **
main_activity_create (java line: 234)
java.lang.Error: Unresolved compilation problem:
Unhandled exception type IOException

at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:20)
at digitline.txtofpdf.main._activity_create(main.java:234)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)

at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Create, isFirst = true **
main_activity_create (java line: 237)
java.lang.Error: Unresolved compilation problem:
Unhandled exception type IOException

at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:20)
at digitline.txtofpdf.main._activity_create(main.java:237)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)
** Activity (main) Create, isFirst = true **
main_activity_create (java line: 237)
java.lang.NoClassDefFoundError: com.itextpdf.text.pdf.PdfReader
at com.digitline.txtofpdf.TXTofPDF.readTextForPDF(TXTofPDF.java:20)
at digitline.txtofpdf.main._activity_create(main.java:237)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:167)
at digitline.txtofpdf.main.afterFirstLayout(main.java:89)
at digitline.txtofpdf.main.access$100(main.java:16)
at digitline.txtofpdf.main$WaitForLayout.run(main.java:74)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4424)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
at dalvik.system.NativeStart.main(Native Method)

Erel · Feb 21, 2013

This line: //@DependsOn(values = {"itextpdf-5.3.3.jar"})
Should be changed to: @DependsOn(values = {"itextpdf-5.3.3"})

Java Question Please Where is the mistake??

lindomar

Member

Attachments

Erel

B4X founder

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