BAEL-5866 Reading PDF File using Java (#13403)

pdf/src/test/java/com/baeldung/pdfreadertest/ReadPdfFileUnitTest.java

@@ -0,0 +1,52 @@
+package com.baeldung.pdfreadertest;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.text.PDFTextStripper;
+import org.junit.jupiter.api.Test;
+
+import com.itextpdf.text.pdf.PdfReader;
+import com.itextpdf.text.pdf.parser.PdfTextExtractor;
+
+class ReadPdfFileUnitTest {
+
+    @Test
+    public void givenSamplePdf_whenUsingApachePdfBox_thenCompareOutput() throws IOException {
+        String expectedText = "Hello World!\n";
+
+        File file = new File("sample.pdf");
+        PDDocument document = PDDocument.load(file);
+
+        PDFTextStripper stripper = new PDFTextStripper();
+
+        String text = stripper.getText(document);
+
+        document.close();
+
+        assertEquals(expectedText, text);
+
+    }
+
+    @Test
+    public void givenSamplePdf_whenUsingiTextPdf_thenCompareOutput() throws IOException {
+        String expectedText = "Hello World!";
+
+        PdfReader reader = new PdfReader("sample.pdf");
+        int pages = reader.getNumberOfPages();
+        StringBuilder text = new StringBuilder();
+
+        for (int i = 1; i <= pages; i++) {
+
+            text.append(PdfTextExtractor.getTextFromPage(reader, i));
+
+        }
+        reader.close();
+        assertEquals(expectedText, text.toString());
+
+    }
+
+}