Follow these steps to extract or get or copy text from your pdf file using android studio with java or kotlin

Step 1 

Create New Project

Step2

Named the project as you want

Step 3

Open module level file check down image below





Step 4

Copy this dependency and paste in file
implementation 'com.itextpdf:itext-pdfa:5.5.5'
Step 5
Choose file from your mobile and send path or uri to this method

public void callExtractPdfFile(String path, String isPathOrUri) {
    mLoading_pb.setVisibility(View.VISIBLE);

    try {
        mInputStream = this.getContentResolver().openInputStream(Uri.parse(path));
    } catch (FileNotFoundException e) {
        e.printStackTrace();
        Log.d(TAG, "extractPdfFile: " + e.getMessage());
    }

    new Thread(() -> {
        try {
            String fileContent = "";
            StringBuilder builder = new StringBuilder();
            PdfReader reader;
            if (isPathOrUri.equals("uri"))
                reader = new PdfReader(mInputStream);
            else reader = new PdfReader(path);
            int n = reader.getNumberOfPages();
            for (int i = 1; i <= n; i++) {
                fileContent = PdfTextExtractor.getTextFromPage(reader, i);
                builder.append(fileContent);
            }
            reader.close();
            this.runOnUiThread(() -> {
                mContent_et.setText(builder);
                mLoading_pb.setVisibility(View.INVISIBLE);
            });
        } catch (Exception e) {
            Log.d(TAG, "extractPdfFile: " + e.getMessage());
        }
    }).start();
}


thats it code is finished and enjoy the code