Convert text file (.txt) into CSV file using Java

Convert.java

import java.io.*;

public class Convert {
	public static void main(String[] args) {
		System.out.println("Initialize ...");
		Read read = new Read("soal01.txt");
		Print print = new Print();
		for (int i = 1; i <= 3; i++) {
			try{
				print.setFileName("jawaban"+i+".csv");
				read.setPrint(print);
				read.exec(i);
			} catch(IOException ex){
				ex.printStackTrace();
			}
		}
		System.out.println("Finished");
	}
}

class Print {

	protected String fileName;

	protected FileWriter writer;

	public Print() {}

	public Print(String fileName) throws IOException {
		this.fileName = fileName;
		this.writer = new FileWriter(this.fileName);
	}

	public String getFileName() {
		return this.fileName;
	}

	public void setFileName(String fileName) throws IOException {
		this.fileName = fileName;
		this.writer = new FileWriter(this.fileName);
	}

	public void close() throws IOException {
		this.writer.flush();
		this.writer.close();
	}

	public void addRow(String[] c) throws IOException {
		int l = c.length;
		for(int i = 0; i < l; i++) {
			this.writer.append(c[i]);
			if(i != (l - 1)) {
				this.writer.append(",");
			}
		}
		this.writer.append('\n');
	}
}

class Read {

	protected String fileName;

	protected BufferedReader bufferedReader;

	protected Print print;

	public Read(String fileName) {
		this.fileName = fileName;
	}

	public Read(Print print, String fileName) {
		this.print = print;
		this.fileName = fileName;
	}

	public void setPrint(Print print) {
		this.print = print;
	}

	public Print getPrint() {
		return this.print;
	}

	public void exec(Integer type) {
		String sCurrentLine = "";
		try{
			this.bufferedReader = new BufferedReader(
				new FileReader(this.fileName));

			while((sCurrentLine = this.bufferedReader.readLine()) != null) {
				String[] columns = sCurrentLine.split("\t");
				int length = columns.length;
				if(type == 1) {
					this.print.addRow(columns);
				} else if(length >= 2){
					double col1 = Double.parseDouble(columns[1]);
					if(col1 > 20){
						if(type == 2){
							this.print.addRow(columns);
						} else if(type == 3 && length >= 3 && columns[2] != null){
							this.print.addRow(columns);
						}
					}
				}
			}
			this.print.close();

		} catch(IOException ex) {
			ex.printStackTrace();
		} finally {
			try{
				if(this.bufferedReader != null) {
					this.bufferedReader.close();
				}
			} catch(IOException ex) {
				ex.printStackTrace();
			}
		}
	}
}

soal01.txt

alskdfjlksadjf  5	
asdfjklasfjlkasdf 8	lll
sajdfklsadjflksaf	15	asdf
sajdkflsadfjsa	4	kadsjf
fsjkdlfjslakdf	90	2341asdfjk
sadjfklasdjflsa	77	jaksdjf
dfsjakdlfjsaldkf	23	kasjdf
asdfjklasjdflsad	99	
fsadklfjsalkdf	29	kasljdf
asdfjklsadfjslak	9	

Initialize ...
Exception in thread "main" java.lang.NumberFormatException: For input string: "lll"
at java.base/jdk.internal.math.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2054)
at java.base/jdk.internal.math.FloatingDecimal.parseDouble(FloatingDecimal.java:110)
at java.base/java.lang.Double.parseDouble(Double.java:549)
at Read.exec(Convert.java:103)
at Convert.main(Convert.java:17)

help me to get out of this