# Limitations and API Differences

> Compare the limitations and API differences between Aspose.Slides for Node.js via Java and Aspose.Slides for Java.

Source: https://docs.aspose.com/slides/nodejs-java/limitations-and-api-differences/
Updated: 2026-08-05


## **Public API Differences**
The following list (with sample code segments) shows some differences between Aspose.Slides for Java and Aspose.Slides for Node.js via Java APIs.

### **Importing library (Package Comparisons)**

**Aspose.Slides for Java**

```java
import com.aspose.slides.*;
```

**Aspose.Slides for Node.js via Java**

```javascript
var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

```

### **Instantiating a new Presentation**

**Aspose.Slides for Java**

```java
Presentation pres = new Presentation();
```

**Aspose.Slides for Node.js via Java**

```javascript
var aspose = aspose || {};
aspose.slides = require("aspose.slides.via.java");

var pres = new aspose.slides.Presentation();
```

### **Streaming Files and Constants**

**Aspose.Slides for Java**

```java
InputStream inputstream = new FileInputStream("Pres1.pptx");
Presentation pres = new Presentation(inputstream);
pres.save("result.pptx", SaveFormat.Pptx);
```

**Aspose.Slides for Node.js via Java**

```javascript
var aspose = aspose || {};

aspose.slides = require("aspose.slides.via.java");

var fs = require("fs");
var readStream = fs.createReadStream("presentation.pptx");
aspose.slides.Presentation.createPresentationFromStream(readStream, function(err, pres) {
   if (err) {
      console.log("open Presentation error");
      return;
   }
   pres.save("result.pptx", aspose.slides.SaveFormat.Pptx);
   console.log('saved to file');
});
```

### **Other Limitations of Aspose.Slides for Node.js via Java API compared to Aspose.Slides for Java API**
1. Importing/exporting data from an Array, ArrayList, ResultSet etc. is not supported.
1. Printing is not supported.