Format file length in string : Files « File Input Output « Java

Format file length in string


public class Utils {

  public static final String format(long l) {

    String s = String.valueOf(l);
    int digits = 0;
    while (s.length() > 3) {
        s = s.substring(0, s.length() - 3);
    StringBuffer buffer = new StringBuffer();
    if ((s.length() == 1) && (String.valueOf(l).length() >= 3)) {
        buffer.append(String.valueOf(l).substring(1, 3));
    } else if ((s.length() == 2) && (String.valueOf(l).length() >= 3)) {
        buffer.append(String.valueOf(l).substring(2, 3));
    if (digits == 0) {
        buffer.append(" B");
    } else if (digits == 1) {
        buffer.append(" KB");
    } else if (digits == 2) {
        buffer.append(" MB");
    } else if (digits == 3) {
        buffer.append(" GB");
    } else if (digits == 4) {
        buffer.append(" TB");
    return buffer.toString();




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