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Active6 months ago
I'm new to Java, and I'm stuck as to why I'm getting an error message whenever I import java.util.Scanner.
On Line 1, I'm getting an error message saying 'The type java.util.Iterator cannot be resolved. It is indirectly referenced from required .class files'.When I run it, the console says, 'Exception in thread 'main' java.lang.Error: Unresolved compilation problem:
at Main.main(Main.java:5)'.
I'm using the Eclipse IDE.If anyone can help, I would appreciate it. Thank you
ChrisHChrisH
1Check if you have JRE in your project.
Project
>Properties
>Java Build Path
>JRE System Library
.How To Import From Scanner On Machine
NhalrathNhalrath
2Eclipse can't 'read' your JRE, as in, it can't find even something as simple as
java.lang.String
. This is because either you've misconfigured the JRE, or the JRE you configured is not understandable by eclipse.Note that eclipse still uses the terminology 'JRE', eventhough JREs no longer exist. When eclipse tells you 'please point me at a JRE', it's really saying: 'Please point me at a JDK'.
JDK16 is quite new, your eclipse is probably outdated and can't read it. Either be on the cutting edge with all the things, or take stable versions for all the things. Don't mix and match.
Option 1: Downgrade Java.
So, install e.g. adoptopenJDK's JDK11, then tell eclipse about it (Window -> preferences -> search in the filterbar for JRE -> add a new one -> Point at the JDK11 install dir, or possibly its 'Home' subdir if on mac), and set up your project to use that (right click, properties, you'll find it from there). It's no problem to have both JDK16 and JDK11 installed on a single machine. You can tell eclipse about all of em and pick a JDK to use for each project and even each run/debug.
Option 2: Upgrade your eclipse
The current most recent stable version should be fine.
NOTE: This problem has nothing to do with Scanner specifically. It won't even find
rzwitserlootrzwitserlootjava.lang.String
- it will fail the first time you use any core type in your source file.57.3k44 gold badges3535 silver badges4545 bronze badges
Please check if jdk's bin path is there in your path environment variable. Also, JAVA_HOME is also set in your environment variable.
manoj aggarwalmanoj aggarwal
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Programs to use the scanner. Are you looking for software to easily digitize your documents and convert them into files PDF? Just bought a scanner or multifunction printer and you don't know which program to use to scan documents and photos?
In today's article, we will meet some of the best programs to use the scanner, thanks to which you can digitize documents and photos obtaining files of excellent quality. You can then convert your documents into PDF files pages, your photos into high resolution JPG or PNG digital images, and much more.
We will also discover some excellent applications for mobile phones, both free and paid, that allow you to frame documents and photos with the phone's camera and transform them into digital files by optimizing perspective, colors and other parameters in a completely automatic way. Starting today, you will have no more excuses not to transform your documents into digital files to save them on PCs, mobile phones and tablets!
Table of Contents
- 1 Programs to use the scanner: the most used
Programs to use the scanner: the most used
NAPS2 (Windows)
NAPS2 is one of the best programs to use the scanner available on Windows. It is completely free and allows you to digitize documents and photos by exporting them in many different file formats: PDF, TIFF, JPEG, PNG, etc. Its interface is fully translated into Italian, it is extremely easy to use and also includes technology OCR (optical character recognition). This means that it can recognize the writing characters included in the documents and generate PDF files in which the text is searchable and edit freely.
The NAPS2 OCR system can recognize many different languages and can also browse images and PDF documents already existing. Also notable is the ability to edit photos and scanned documents (for example, by cutting them, turning them upside down or rotating them) and the availability of a portable version of NAPS2 that can be used without tedious installation procedures.
Scan2PDF (Windows)
Most often, when you scan documents with the scanner, you first save a copy of the files in JPG or BMP format and then convert it to PDF with special conversion software. Scan2PDF is a free application that clears this step and allows you to use the scanner to scan documents directly into PDF format. It also allows you to convert existing images to PDF and rotate scanned documents on the fly.
Another very important thing to underline is that Scan2PDF is available both in the standard version and in the portable version that does not require installations to function (and it is in this last variant that I recommend using it).
iCopy (Windows)
Some MFPs allow you photocopy documents using the scanner They are equipped with. iCopy It is free and open source software that offers this function even on printers equipped with scanners that naturally do not perform this task. In fact, it automates the process by which a document scanned with the printer's scanner is immediately printed by the printer in order to create an exact copy.
iCopy is compatible with all printers and scanners (even separately) and can be easily used even by less experienced users. It is available in standard and portable versions, which does not require tedious installation procedures to be used.
note: the software requires Microsoft's .Net Framework to function.
FreeOCR (Windows)
As you can easily see by name, FreeOCR is a software for digitizing documents that includes OCR technology. OCR (Acronym for Optical Character Recognition) technology is what allows certain programs to analyze and recognize written characters contained in the scanned documents. In this way, it is possible to obtain digital files in which the text is freely searchable and editable.
Well, FreeOCR is extremely easy to use free software that allows you to translate both live scans and images or PDF files previously saved on your PC in plain text (hence in txt).
ABBYY FineReader (Windows)
FreeOCR is a simple and free solution for those who want to digitize documents using OCR technology. ABBYY FineReader instead, it is professional software intended for those who have to digitize many documents and need create PDF files or Word documents with editable texts. It supports many languages, many types of output files, and guarantees a very high text recognition rate.
Obviously you pay for quality. ABBYY FineReader actually costs 129 euros, but after registering on its official website you can try it free for 30 days. Among its most important features, in addition to those for digitizing PDF or Word documents using script character recognition, are those for converting images to PDF and PDF documents in Word.
Prism (Mac)
Prism is one of the best programs to use the scanner available in Mac. In addition to digitizing documents and photos, it allows the recognition of handwriting characters (OCR with multilingual support) and the generation of files Editable PDF. Its full version costs just under € 50, but it is available in a free trial version that inserts watermarks into output documents, covers some extrapolated words through OCR technology, and has other limitations.
Otherwise there is not much to add, the interface of Prizmo is extremely intuitive: to scan a document just start the application, click on the item New document y import from scanner or camera using the appropriate function.
Scanbot (Android / iOS)
If you are looking for an application for scan documents and photos on mobile phones, I can only advise you Scanbot - An extremely powerful yet easy-to-use application that allows you to digitize photos and documents using the camera of mobile phones and iPhone with Android. It includes OCR technology to recognize written characters, automatically optimizes the perspective and colors of scanned images, and allows you to create multi-page PDF files with editable text.
So easy to guess, Scanbot is not 100% free. The basic version of the application is free to download and use, but to have more features you need to get your wallet. To unlock features such as handwritten character recognition, automatic synchronization with speech services, cloud storage (for example, Dropbox, iCloud Drive, etc.) and the modification of documents, it is necessary to make in-app purchases ranging from 5.99 to 9 euros.
Default utilities for Windows and macOS
Maybe not everyone knows it, but Windows and macOS include practical tools to scan documents and photos (without OCR or other advanced functions). Windows Fax and ScanFor example, it is the default utility for scan documents and photos of the OS from Microsoft. It is easily found in the Start menu and allows you to scan any type of document or image with very flexible settings for output. It also allows you to set the resolution of the scans to be obtained, their color gamut, and much more.
MacOS users can trust the utility Image Acquisition located in the folder more Launchpad and allows you to acquire documents and photos from various sources: not only scanners and multifunction printers, but also mobile phones and tablets connected to the PC.
![Mac Mac](https://s3.amazonaws.com/scschoolfiles/1042/img_pd_083937_th5ye0.png)
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