showProgress.java

public static void showProgressWithETA(int current, int total, long startTime) {
        long elapsedTimeMillis = System.currentTimeMillis() - startTime;
        int percent = current * 100 / total;
        int progress = percent / 2;
        System.out.print("\r[");
        for (int i = 0; i < progress; i++) {
            System.out.print("\u001b[32m=\u001b[0m");
        }
        for (int i = progress; i < 50; i++) {
            System.out.print(" ");
        }
        System.out.printf("] %d%%", percent);

        if (current > 0) {
            long remainingTimeMillis = elapsedTimeMillis * (total - current) / current;
            long remainingTimeSeconds = remainingTimeMillis / 1000;
            System.out.printf(" (ETA: %d:%02d:%02d)", remainingTimeSeconds / 3600,
                    (remainingTimeSeconds % 3600) / 60, remainingTimeSeconds % 60);
        }
    }