This code can be used to insert picture in Word Document using Java. For more details refer to the article: https://kb.aspose.com/words/java/how-to-insert-picture-in-word-using-java/

How to Insert Picture In Word Document Using Java.java

import com.aspose.words.Document;
import com.aspose.words.DocumentBuilder;
import com.aspose.words.HeaderFooterType;
import com.aspose.words.License;
import com.aspose.words.Shape;

public class InsertPictureInWordDocumentUsingJava
{
	public static void main(String[] args) throws Exception { //main function for InsertPictureInWordDocumentUsingJava class

	// Initialize a license to avoid trial version watermark in the output Word file after adding image
	License license = new License(); 
	license.setLicense("Aspose.Words.lic");


	// Load input Word DOCX document
	Document AddImagesToWordDOC = new Document("input.docx");

	// Initialize DocumentBuilder class object to add image
	DocumentBuilder imageWriter = new DocumentBuilder(AddImagesToWordDOC);

	// Move the cursor to the Primary Header
	imageWriter.moveToHeaderFooter(HeaderFooterType.HEADER_PRIMARY);

	// Insert a picture in Word document header
	Shape headerImage = imageWriter.insertImage("SampleImage.jpg");

	// Set Image Size in Header section
	headerImage.setWidth(1 * 72); // equals to one inch
	headerImage.setHeight(1 * 72);

	// Move cursor to last Paragraph in Document
	imageWriter.moveTo(AddImagesToWordDOC.getLastSection().getBody().getLastParagraph());

	// Add the picture to Word Document and Link it with the file
	Shape imageAsLinkToFile = imageWriter.insertImage("SampleImage.jpg");
	imageAsLinkToFile.getImageData().setSourceFullName("SampleImage.jpg");

	// Save output DOCX file after inserting image
	AddImagesToWordDOC.save("Word with Embedded and Linked Images.docx");
	}
}