Java: Updating text in the command-line without a new line

I use following code:

public static void main(String[] args) {    long total = 235;    long startTime = System.currentTimeMillis();    for (int i = 1; i <= total; i = i + 3) {        try {            Thread.sleep(50);            printProgress(startTime, total, i);        } catch (InterruptedException e) {        }    }}private static void printProgress(long startTime, long total, long current) {    long eta = current == 0 ? 0 :         (total - current) * (System.currentTimeMillis() - startTime) / current;    String etaHms = current == 0 ? "N/A" :             String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(eta),                    TimeUnit.MILLISECONDS.toMinutes(eta) % TimeUnit.HOURS.toMinutes(1),                    TimeUnit.MILLISECONDS.toSeconds(eta) % TimeUnit.MINUTES.toSeconds(1));    StringBuilder string = new StringBuilder(140);       int percent = (int) (current * 100 / total);    string        .append('\r')        .append(String.join("", Collections.nCopies(percent == 0 ? 2 : 2 - (int) (Math.log10(percent)), " ")))        .append(String.format(" %d%% [", percent))        .append(String.join("", Collections.nCopies(percent, "=")))        .append('>')        .append(String.join("", Collections.nCopies(100 - percent, " ")))        .append(']')        .append(String.join("", Collections.nCopies((int) (Math.log10(total)) - (int) (Math.log10(current)), " ")))        .append(String.format(" %d/%d, ETA: %s", current, total, etaHms));    System.out.print(string);}

The result:

First when you write, don't use writeln(). Use write(). Second, you can use a "\r" to Carriage Return without using \n which is a New line. The carriage return should put you back at the beginning of the line.