Word docx : How to set header height

I added header docx file but unable to set height of Header. I have to reduce height of header.
Screen short :

Code :

package com.techior.word;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.nio.charset.StandardCharsets;

import com.aspose.words.BreakType;
import com.aspose.words.ConvertUtil;
import com.aspose.words.Document;
import com.aspose.words.DocumentBuilder;
import com.aspose.words.HeaderFooterType;
import com.aspose.words.ImportFormatMode;
import com.aspose.words.ImportFormatOptions;
import com.aspose.words.License;
import com.aspose.words.Orientation;
import com.aspose.words.PageSetup;
import com.aspose.words.PaperSize;
import com.aspose.words.ParagraphAlignment;
import com.aspose.words.PdfImageCompression;
import com.aspose.words.PdfSaveOptions;
import com.aspose.words.SaveFormat;
import com.aspose.words.Shape;
import com.aspose.words.TextColumn;
import com.aspose.words.TextColumnCollection;
import com.aspose.words.WrapType;


public class AsposeWordConverter {
	
	public AsposeWordConverter(String licenseFile) {
		License license = new License();
		FileInputStream licInputStream;
		try {
			licInputStream = new FileInputStream(licenseFile);
			license.setLicense(licInputStream);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	

	
	 public void convertHTMLToDocx( File docxfile,String instruction,String questionPaper){
			try {
				
				DocumentBuilder builder = new DocumentBuilder();
				
				PageSetup ps = builder.getPageSetup();
				ps.setPaperSize(PaperSize.CUSTOM);
				ps.setOrientation(Orientation.PORTRAIT);
				ps.setPageHeight(ConvertUtil.inchToPoint(11));
				ps.setPageWidth(ConvertUtil.inchToPoint(10));
				ps.setTopMargin(ConvertUtil.inchToPoint(0.3));
				ps.setBottomMargin(ConvertUtil.inchToPoint(0.3));
				ps.setLeftMargin(ConvertUtil.inchToPoint(0.3));
				ps.setRightMargin(ConvertUtil.inchToPoint(0.3));
		 	  	
		 	  	//header and footer section
				setHeaderFooter(builder);
				
				builder.moveToSection(0);
				
				
				//set instruction
				builder.insertDocument(new Document(new ByteArrayInputStream(instruction.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
				
				
				//divide page into two columns							
				//builder.write("Question Paper");
				
				builder.insertBreak(BreakType.SECTION_BREAK_CONTINUOUS);
				
				TextColumnCollection columns = builder.getPageSetup().getTextColumns();
				columns.setLineBetween(true);
				columns.setEvenlySpaced(false);
				columns.setCount(2);
				columns.setSpacing(ConvertUtil.inchToPoint(0.3));
				
				double contentWidth = ps.getPageWidth() - ps.getLeftMargin() - ps.getRightMargin();
				TextColumn c1 = columns.get(0); 
				 c1 = columns.get(0); 
				 c1.setWidth(contentWidth/2);
				 
				 TextColumn c2 = columns.get(1); 
				 c2.setWidth(contentWidth/2);
				
				 builder.getParagraphFormat().clearFormatting();
				
				 builder.write("Colunm 1");
				 builder.insertDocument(new Document(new ByteArrayInputStream(questionPaper.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
				 builder.write("Colunm 1");
				 builder.insertDocument(new Document(new ByteArrayInputStream(questionPaper.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
				 builder.write("Colunm 1");
				 builder.insertDocument(new Document(new ByteArrayInputStream(questionPaper.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
				 builder.write("Colunm 1");
				 builder.insertDocument(new Document(new ByteArrayInputStream(questionPaper.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
				 builder.write("Colunm 1");
				 builder.insertDocument(new Document(new ByteArrayInputStream(questionPaper.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
				 builder.write("Colunm 1");
				 builder.insertDocument(new Document(new ByteArrayInputStream(questionPaper.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
				 builder.write("Colunm 1");
				 builder.insertDocument(new Document(new ByteArrayInputStream(questionPaper.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
				 builder.write("Colunm 1");
				 builder.insertDocument(new Document(new ByteArrayInputStream(questionPaper.toString().getBytes(StandardCharsets.UTF_8) )), ImportFormatMode.USE_DESTINATION_STYLES);
				
					
					/*
					 * Document questionContentDoc = new Document(htmlFile.getAbsolutePath());
					 * builder.insertDocument(questionContentDoc,
					 * ImportFormatMode.USE_DESTINATION_STYLES);
					 */
					 
				
				builder.getDocument().save( new FileOutputStream(docxfile), SaveFormat.DOCX);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	 
	 public void convertDocxToPDF(File docxFile, File pdfFile){
		Document convDoc;
		try {
			convDoc = new Document(docxFile.getAbsolutePath());
			convDoc.getLayoutOptions().setTextShaperFactory(com.aspose.words.shaping.harfbuzz.HarfBuzzTextShaperFactory.getInstance());
			
			PdfSaveOptions opt = new PdfSaveOptions();
			opt.getDownsampleOptions().setDownsampleImages(false);
			opt.setUseAntiAliasing(true);
			opt.setImageCompression(PdfImageCompression.JPEG);
			convDoc.save( new FileOutputStream(pdfFile), opt);
		} catch (Exception e) {
			e.printStackTrace();
		}
	} 
	
	
	public void convertDocxToHtml( File docxfile,File htmlFile){
		try {
			Document doc = new Document(docxfile.getAbsolutePath());
			doc.save(htmlFile.getAbsolutePath(),SaveFormat.HTML); 
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public void setHeaderFooter(DocumentBuilder builder ) {
		
		StringBuilder header = new StringBuilder();
		
		header.append("<HTML><HEAD></HEAD><BODY> ");
 		header.append("<table style='width:100%;margin:0px;padding:0px;'>");
	  		header.append(" <tr>  ");
	  		header.append(" <td style='text-align: center;width:auto;'><b>Techior Solutions Pvt. Ltd.</b></td> ");
	  		header.append(" </tr>  ");
	  		
	  		header.append("<tr><td style='text-align: center;margin:0px;padding:0px;'><b>Test-1</b></td></tr>");
 	  	header.append("<tr> <td   style='border-bottom: 0.5pt dotted black;' >");
 	  	header.append("<table style='width:100%;margin:0px;padding:0px;'>");
 	  	header.append("<tr>");
 	  	header.append(" <td style='text-align: left;width:50%;margin:0px;padding:0px;'>Total Time: 01:20:00</td> ");
 	  	header.append(" <td style='text-align: right;width:50%;margin:0px;padding:0px;'>Total Marks: 200</td> ");
 	  	header.append(" </tr>  ");
 	  	header.append(" </table> ");
 	  	
 		header.append(" </td></tr>  ");
 	  	header.append(" </table> ");
 	  	
 	  	header.append("</BODY></HTML>");
	  		
	  		
 	  	String headerLogo = "https://learnmagica.com/learnmagica/onlineTG/uploadedFile/header/main-logo_export.png";
		
		
		 //Set flags for different headers and footers for first, even and odd pages 
        builder.getPageSetup().setDifferentFirstPageHeaderFooter(true);
        builder.getPageSetup().setOddAndEvenPagesHeaderFooter(true);
        // Insert some text after moving the cursor to the beginning of the header
        builder.moveToHeaderFooter(HeaderFooterType.HEADER_PRIMARY);
        Document headerDocument;
		try {
			headerDocument = new Document(new ByteArrayInputStream(header.toString().getBytes(StandardCharsets.UTF_8)));
			PageSetup ps = builder.getPageSetup();
		    ps.setHeaderDistance(10);
		    ps.setFooterDistance(10);
		    
	        builder.moveToHeaderFooter(HeaderFooterType.HEADER_FIRST);
	        
	        
	        builder.insertDocument(headerDocument, ImportFormatMode.USE_DESTINATION_STYLES);
	        
	        Shape shape = builder.insertImage(headerLogo);
	        shape.setWrapType(WrapType.NONE);
	        shape.setLeft(4);
	        shape.setTop(-ConvertUtil.inchToPoint(1));
	      //  builder.write("<<<<<<< HeaderFirst >>>>>>>");

			/*
			 * builder.moveToHeaderFooter(HeaderFooterType.HEADER_EVEN);
			 * builder.write("<<<<<<< HeaderEven >>>>>>>");
			 */
	        // Insert some text after moving the cursor to the beginning of the footer
	        builder.moveToHeaderFooter(HeaderFooterType.FOOTER_PRIMARY);
	        builder.getParagraphFormat().setAlignment(ParagraphAlignment.CENTER);
	        builder.insertField("PAGE", null);
	        builder.write(" of ");
	        builder.insertField("NUMPAGES", null);
	        
			
			builder.moveToHeaderFooter(HeaderFooterType.FOOTER_FIRST);
			builder.getParagraphFormat().setAlignment(ParagraphAlignment.CENTER);
	        builder.insertField("PAGE", null);
	        builder.write(" of ");
	        builder.insertField("NUMPAGES", null);
			  
			  
		   builder.moveToHeaderFooter(HeaderFooterType.FOOTER_EVEN);
		   builder.getParagraphFormat().setAlignment(ParagraphAlignment.CENTER);
	       builder.insertField("PAGE", null);
	       builder.write(" of ");
	       builder.insertField("NUMPAGES", null);
	        
	        
	        // Move the cursor to the beginning of body in first section to add some page breaks to see the headers and footers 
			/*
			 * builder.moveToSection(0); builder.writeln("Page1");
			 * builder.insertBreak(BreakType.PAGE_BREAK); builder.writeln("Page2");
			 * builder.insertBreak(BreakType.PAGE_BREAK); builder.writeln("Page3");
			 */
			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	
	
	public static void main(String arr[]){
		
		//set instruction.
		StringBuilder instruction = new StringBuilder();
		instruction.append("<div style='width:100%;'>");
		instruction.append("<p style='text-align: center;'><b> Instruction </b></p>");
		instruction.append("<p>");
		instruction.append("ONLYOFFICE Document Builder allows you to build a document easily"
				+ "without the need to actually run a document processing editor. It also "
				+ "allows the developers to automate document building using the "
				+ "templates you create or inserting the data from some database of yours "
				+ "into a document or a set of documents. It has all the features of a "
				+ "common document editor but is lightweight and can be easily integrated "
				+ "into your document management system, CRM system, etc. using its "
				+ "JavaScript API."
				+ "  As any document is a composite object consisting of a tree of larger "
				+ "nodes (paragraphs and tables), where it is possible to insert smaller "
				+ "document elements (text runs, images, charts, shapes), ONLYOFFICE "
				+ "Document Builder allows to insert the content and format it to your "
				+ "liking quickly and easily.");
		instruction.append("</p>");
		instruction.append("</div>");
		
		
		StringBuilder questionQuestion = new StringBuilder();
		questionQuestion.append("<div style='width:100%; padding:1em;'>");
		questionQuestion.append("<p style='text-align: center;'><b> Questions </b></p>");
		questionQuestion.append("<p>");
		questionQuestion.append("ONLYOFFICE Document Builder allows you to build a document easily"
				+ "without the need to actually run a document processing editor. It also "
				+ "allows the developers to automate document building using the "
				+ "templates you create or inserting the data from some database of yours "
				+ "into a document or a set of documents. It has all the features of a "
				+ "common document editor but is lightweight and can be easily integrated "
				+ "into your document management system, CRM system, etc. using its "
				+ "JavaScript API."
				+ "  As any document is a composite object consisting of a tree of larger "
				+ "nodes (paragraphs and tables), where it is possible to insert smaller "
				+ "document elements (text runs, images, charts, shapes), ONLYOFFICE "
				+ "Document Builder allows to insert the content and format it to your "
				+ "liking quickly and easily.");
		questionQuestion.append("</p>");
		questionQuestion.append("</div>");
		
		AsposeWordConverter asposeWordConverter = new AsposeWordConverter("E:\\NitinData\\Nitin\\Third Part Software\\Aspose\\word\\Aspose.Words.Product.Family_temporary.lic");
		
		asposeWordConverter.convertHTMLToDocx(new File("E:\\NitinData\\temp\\LM\\html\\Math_Type_solution_1674280083197.docx"),
				instruction.toString(),questionQuestion.toString());
		
		/*
		 * asposeWordConverter.convertHTMLToDocx(new
		 * File("E:\\NitinData\\temp\\LM\\html\\Math_Type_solution_1674280083197.html"),
		 * new
		 * File("E:\\NitinData\\temp\\LM\\html\\Math_Type_solution_1674280083197.docx"),
		 * instruction.toString(),questionQuestion.toString());
		 */
		System.out.println("conversion done.");
	}
	
}

Please guide us how to reduce header height.

@nitinchopkar The space is caused by two empty paragraphs in the header:

In MS Word documents a story (Header, footer, textbox, body) always contains one empty paragraph, also table cannot be the only or the last child of the story. So when you create a document from HTML, that contain only the table, like in your code, an empty paragraph is added after the table automatically. So one of these empty paragraphs comes from the inserted document and another is the default empty paragraph in the header. Once of the empty paragraphs can be removed, another is required and also is not empty since shape is inserted in it. So to avoid the space you should remove empty paragraphs and make the last paragraphs in the story as small as possible. The code might look like this:

builder.moveToHeaderFooter(HeaderFooterType.HEADER_FIRST);

builder.insertDocument(headerDocument, ImportFormatMode.USE_DESTINATION_STYLES);

Shape shape = builder.insertImage(headerLogo);
shape.setWrapType(WrapType.NONE);
shape.setLeft(4);
shape.setTop(-ConvertUtil.inchToPoint(1));

// Remove empty paragraphs in the header.
Iterable<Paragraph> paragraphs = builder.getCurrentStory().getParagraphs();
for (Paragraph p : paragraphs)
{
    if (!p.hasChildNodes())
        p.remove();
}

// If the last remaining paragraph does not have text, make it as small as possible.
if (builder.getCurrentStory().getLastParagraph().toString(SaveFormat.TEXT).trim().equals(""))
    builder.getCurrentStory().getLastParagraph().getParagraphBreakFont().setSize(0);

In this case the output look like this: