This method creates small status bars in ASCII art for printing in the console or in log files. - Java Language Basics

Java examples for Language Basics:Console

  1. HOME
  2. Java
  3. Language Basics
  4. Console

Description

This method creates small status bars in ASCII art for printing in the console or in log files.

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        int length = 2;
        double d = 2.45678;
        boolean showPercentage = true;
        System.out.println(createPercentageBar(length, d, showPercentage));
    }//from  w  ww  .  j  a va 2s .  co m

    /**
     * This method creates small status bars in ASCII art for printing in the
     * console or in log files. The status bar looks like "[********.........]"
     * without shown percentage or "[*******........] ( 45%)" with percentage
     * shown.
     * 
     * @param length
     *            is the total length of the status bar. In this length the
     *            brackets are included. The percentage number is extra length.
     * @param d
     *            is the percentage to show.
     * @param showPercentage
     *            defines whether the percentage value is to be shown.
     * @return A String is returned containing the ASCII art representation of
     *         the string
     */
    public static String createPercentageBar(int length, double d,
            boolean showPercentage) {
        StringBuffer buffer = new StringBuffer("[");
        int starNum = (int) Math.round(d * (length - 2));
        for (int dummy = 1; dummy <= length - 2; dummy++) {
            if (dummy <= starNum) {
                buffer.append('*');
            } else {
                buffer.append('.');
            }
        }
        buffer.append(']');
        if (showPercentage) {
            buffer.append(" (");
            StringBuffer num = new StringBuffer(String.valueOf((int) Math
                    .round(d * 100.0)));
            while (num.length() < 3) {
                num.insert(0, ' ');
            }
            buffer.append(num);
            buffer.append("%)");
        }
        return buffer.toString();
    }
}

Related Tutorials