Problem moving from itext 7.0.4 to 7.1.11 - itext

Question

I have some code written in itext 7 that loads large PDF with IRandomAccessSource
IRandomAccessSource rdSource = null;
File pdf = new File(folder, getFilename());
rdSource = new RandomAccessSourceFactory().createBestSource(pdf.getCanonicalPath());
pdfReader = new PdfReader(rdSource, null);
PdfDocument doc = new PdfDocument(pdfReader); // --> Throws NullPointerException with 7.1.11
If PdfDocument doc = new PdfDocument(pdfReader) is called I get a NullPointerException since I changed the Maven Dependencies from 7.0.4 to 7.1.11
java.lang.NullPointerException
at com.itextpdf.kernel.pdf.PdfDocument.open(PdfDocument.java:1867)
at com.itextpdf.kernel.pdf.PdfDocument.<init>(PdfDocument.java:252)
at com.itextpdf.kernel.pdf.PdfDocument.<init>(PdfDocument.java:234)
at pdfTextExtractor.ValidateSendung.execute(ValidateSendung.java:68)
at pdfTextExtractor.TestValidateSendunge.test2(TestValidateSendunge.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
Maven Dependencies are:
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>kernel</artifactId>
<version>7.1.11</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>io</artifactId>
<version>7.1.11</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>layout</artifactId>
<version>7.1.11</version>
</dependency>
Any hint, why this happens with the new Version?
Thank you
Regards Michel
Method PDFDocument.open --> Crashes on
memoryLimitsAwareHandler = reader.properties.memoryLimitsAwareHandler;
as reader.properties is null
protected void open(PdfVersion newPdfVersion) {
this.fingerPrint = new FingerPrint();
try {
EventCounterHandler.getInstance().onEvent(CoreEvent.PROCESS, properties.metaInfo, getClass());
if (reader != null) {
if (reader.pdfDocument != null) {
throw new PdfException(PdfException.PdfReaderHasBeenAlreadyUtilized);
}
reader.pdfDocument = this;
memoryLimitsAwareHandler = reader.properties.memoryLimitsAwareHandler;

Answer 1

Obviously the ReaderProperties need to be passed in the new Version.
I changed the code to
pdfReader = new PdfReader(rdSource, new ReaderProperties());
And now it works..
How can this be, that this worked in V.7.0.4 and now it changed with 7.1.11?
Anyhow: Problem solved
Regards