非同期処理で一行づつ処理の進行状況を表示させたい。

Question

提示子コードですがマルチスレッドなのですが以下のようにコンソール画面をクリアしながら画面に進行状況を表示させたいのですがこれをするにはどういった処理を書く必要があるのでしょうか？

ファイル〇〇 [pdf生成中] 20%
ファイル〇〇 [pdf生成中] 10%

public class Image 
{		
	
	public Image(int w,int h,String n)
	{
		width = w;
		height = h;
		path = n;
	}
	
	
	public int width;	
	public int height;	
	public String path;	
}

import java.io.IOException;
import java.io.File;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;

public class ConverterPage extends Thread
{
	File pageName;
	
	public ConverterPage(String file)
	{
		pageName = new File(file);
	}
	
	@Override
	public void run()
	{
		try
		{				
			BufferedImage b  = ImageIO.read(pageName);								
			Image img = new Image(b.getWidth(),b.getHeight(),pageName.getPath());	
			PDDocument document = new PDDocument();											
			PDRectangle rec = new PDRectangle();
			rec.setUpperRightX(0);
			rec.setUpperRightY(0);
			rec.setLowerLeftX(img.width);
			rec.setLowerLeftY(img.height);
			PDPage page = new PDPage(rec);			
			document.addPage(page);
			
			PDImageXObject xImage = PDImageXObject.createFromFile(pageName.getPath(),document);
			PDPageContentStream stream = new PDPageContentStream(document,page);
			stream.drawImage(xImage, 0,0);
			stream.close();
			
			document.save(pageName.getParent() + "\" + pageName.getName() + ".pdf");	
//			System.out.println("--->: " + fileName.getParent() + "\" + fileName.getName() + ".pdf");
			
				
		}
		catch(IOException e)
		{
			e.printStackTrace();
		}
	}
	
}

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main 
{	
	public static void main(String args[]) 
	{	
		Scanner scanner = new Scanner(System.in);	
		List<Converter> dirList = new ArrayList<>();		//ディレクトリ
		List<ConverterPage> pageList = new ArrayList<>();	//ページ
			
		int i = 0;	//表示用
		while(true)
		{
			
			System.out.print("\n\nDirectory: ");
			
			if(scanner.hasNextLine() == false)
			{
				break;
			}
			
			

			String fileName = scanner.nextLine();
			System.out.println(fileName);
			
			File file = new File(fileName);
			
			//System.out.println(file.getName().substring(file.getName().lastIndexOf(".")));
			
			System.out.println(" " + i + " >: " + fileName);
			
			//ファイルかディレクトリかを選別
			if(file.exists() == true)
			{				
				if(file.isFile() == true)
				{
					String extension = file.getName().substring(file.getName().lastIndexOf("."));
					
					if(extension.equals(".png") || extension.equals(".jpg") || extension.equals(".jpeg"))
					{					
						pageList.add(new ConverterPage(fileName));
					}	
				}
				else
				{	
					dirList.add(new Converter(fileName));
				}
			}
			else
			{
				System.out.println("対応形式ではりません: " + file.getName());
			}	
			
			i++;	
		}
		
		
		//ディレクトリ
		if(dirList.size() > 0)
		{
			for(Converter con : dirList)
			{
				con.start();
			}
				
		}
		
		//ファイル
		if(pageList.size() > 0)
		{
			for(ConverterPage con : pageList)
			{
				con.start();
			}	
		}
		
		try
		{
			//待機
			for(Converter con : dirList)
			{
				con.join();
			}	
			
			//待機
			for(ConverterPage con : pageList)
			{
				con.join();
			}	
			
		}
		catch(InterruptedException e)
		{
			e.printStackTrace();
		}
		
		scanner.close(); //scanner close
	
		
		System.out.println("終了");
	}
}

import java.io.File;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;

import java.util.ArrayList;
//import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;

public class Converter extends Thread
{
	File fileName;	
	
	
	private void GetDirectory(File dir,List<Image> list)
	{
		
		
		
		List<String> strList = new ArrayList<>();
		
		
		
		for(int i = 0; i < dir.listFiles().length; i++)
		{
			strList.add(dir.listFiles()[i].getPath());
		}
		
		Collections.sort(strList);	
				
		int i = 0;
		for(; i < dir.listFiles().length; i++)
		{				
			boolean w = false;
			try 
			{
				BufferedImage b  = ImageIO.read(new File(strList.get(i)));
				Image img = new Image(b.getWidth(),b.getHeight(),strList.get(i));
						
				list.add(img);
				
				b = null;
			} 
			catch(NullPointerException e)
			{
				
				w = true;
				
				
			}
			catch (IOException e) 
			{
				
				e.printStackTrace();
			}
			
			if ( w == false)
			{
				//System.out.println(list.get(list.size() - 1).path);
			}
			
		}	
		
		//System.out.println("�y�[�W��: " + i);
		
		
		
		System.out.println();
		//System.out.println();
	}
	
	
	
	private void GeneratePDF(List<Image> list,List<String> pathList,File fileName)
	{
		try
		{
			PDDocument document = new PDDocument();	
			List<PDPage> page = new ArrayList<>();	
			
			
			
			
			for(Image image  : list)
	    	{							
				PDRectangle rec = new PDRectangle();
				rec.setUpperRightX(0);
				rec.setUpperRightY(0);
				rec.setLowerLeftX(image.width);
				rec.setLowerLeftY(image.height);
				
				//System.out.println(image.path + "  --- size ---> ("+ image.width + " , " + image.height + ")");
					
				page.add(new PDPage(rec));
				document.addPage(page.get(page.size() -1));					
	    	}
			
		
			for(int i = 0; i < list.size(); i++)
	    	{
				
				PDImageXObject xImage = PDImageXObject.createFromFile(list.get(i).path,document);
				PDPageContentStream stream = new PDPageContentStream(document,page.get(i));
				stream.drawImage(xImage, 0,0);
					
			
				stream.close();	
	    	}
			
			
			document.save(fileName.getParent() + "\" + fileName.getName() + ".pdf");	
			System.out.println("--->: " + fileName.getParent() + "\" + fileName.getName() + ".pdf");

			
			document.close();
						
		}
		catch(IOException e)
		{
			e.printStackTrace();
		}
	}
	
	
	public Converter(String filePath) 
	{				
		fileName = new File(filePath);
	}
	
	@Override
	public void run()
	{
		List<Image> imageList  = new ArrayList<>();
		List<String> fileList = new ArrayList<>();
			
		System.out.println();
		GetDirectory(fileName,imageList);					 	
		GeneratePDF(imageList,fileList,fileName);							
	}
	
}