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Extract Text From PDF in Java

In this article, we’re going to explain how to extract text from a Pdf file in Java.
An overview of content:
  1. Extract All Text from a Pdf
  2. Read/Extract Text from a Specific Rectangle Area in a Pdf Page
  3. Read/Extract Text using SimpleTextExtractionStrategy
The Pdf library we need:
The example Pdf file:
alt text

Sample Code

Imported Namespaces
import com.spire.pdf.*;
import com.spire.pdf.exporting.text.SimpleTextExtractionStrategy;
import java.awt.geom.Rectangle2D;
import java.io.*;
Read/Extract All Text from a Pdf
//Instantiate a PdfDocument object
PdfDocument pdf = new PdfDocument();
//Load the Pdf file
pdf.loadFromFile("Additional.pdf");

StringBuilder sb= new StringBuilder();

//Extract text from every page of the Pdf
for (PdfPageBase page: (Iterable<PdfPageBase>) pdf.getPages()) {
    sb.append(page.extractText(true));
}

try {
    //Write the text into a .txt file 
    FileWriter writer = new FileWriter("ExtractText.txt");
    writer.write(sb.toString());
    writer.flush();
} catch (IOException e) {
    e.printStackTrace();
}

//Close the PdfDocument object
pdf.close();
Output:alt text
Read/Extract Text from a Specific Rectangle Area in a Pdf Page
//Instantiate a PdfDocument object
PdfDocument pdf = new PdfDocument();
//Load the Pdf file
pdf.loadFromFile("Additional.pdf");

//Get the first page of the Pdf
PdfPageBase page = pdf.getPages().get(0);

//Instantiate a Rectangle2D object 
Rectangle2D rect = new Rectangle2D.Float();
//Set location and size
rect.setFrame( 50, 50, 500, 100);

//Extract text from the given rectangle area in the first page
StringBuilder sb= new StringBuilder();
StringBuilder append = sb.append(page.extractText(rect));

try {
    //Write the text into a .txt file 
    FileWriter writer = new FileWriter("ExtractText.txt");
    writer.write(sb.toString());
    writer.flush();
} catch (IOException e) {
    e.printStackTrace();
}

//Close the PdfDocument object
pdf.close();
Output:alt text
Read/Extract Text using SimpleTextExtractionStrategy
//Instantiate a PdfDocument object
PdfDocument pdf = new PdfDocument();
//Load the Pdf file
pdf.loadFromFile("Additional.pdf");

//Get the first page of the Pdf
PdfPageBase page = pdf.getPages().get(0);

//Extract text from the first page using SimpleTextExtractionStrategy
SimpleTextExtractionStrategy strategy = new SimpleTextExtractionStrategy();
StringBuilder sb= new StringBuilder();
StringBuilder append = sb.append(page.extractText(strategy));

try {
    //Write the text into a .txt file 
    FileWriter writer = new FileWriter("ExtractText.txt");
    writer.write(sb.toString());
    writer.flush();
} catch (IOException e) {
    e.printStackTrace();
}

//Close the PdfDocument object
pdf.close();
Output:alt text
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