JavaInREADME/formatter/Test.java at main · abusaeed2433/JavaInREADME · GitHub

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package formatter;

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;

public class Test {

    public static void main(String[] args) {

        numberFormat();
        decimalFormat();
        printfStyleFormatting();

    }

    private static void printfStyleFormatting(){
        System.out.println("--------------------- printfStyleFormatting ---------------");

        // Formatting strings
        System.out.printf("%1$4s, %2$4s, and %3$6s %n", "Fu", "Hu", "Lo"); //  Fu,   Hu, and     Lo

        //formatting numbers
        //takes space on left side
        System.out.printf("%1$4d, %2$4d, %3$4d %n", 10, 100, 1000); //  10,  100, 1000

        //takes space on right side
        System.out.printf("%1$-4d, %2$-4d, %3$-4d %n", 1, 10, 100); //1   , 10  , 100

    }

    private static void decimalFormat(){
        System.out.println("-------------------- decimalFormat ------------------------");

        double num = 175.570354;

        String pattern = "####.####"; // my custom pattern. maximum
        DecimalFormat format = new DecimalFormat();
        format.applyPattern(pattern); // applying my pattern

        String sn = format.format(num);
        System.out.println(sn); // 175.5704

        pattern = "0000.0000";
        format.applyPattern(pattern);
        sn = format.format(num);
        System.out.println(sn); //0175.5704

        num = -125.53;
        pattern = "#.##";
        format.applyPattern(pattern);

        sn = format.format(num);
        System.out.println(sn);// -125.53

        num = 12.53;
        pattern = "#.##;(#.##)"; // left part of semicolon is for positive number, right part for negative number
        format.applyPattern(pattern);
        sn = format.format(num); System.out.println(sn); // 12.53

        num = -12.53;
        sn = format.format(num); System.out.println(sn); // (12:53)

    }

    private static void numberFormat(){

        System.out.println("---------------------- numberFormat ----------------------");

        //------------   default locale USA -----------
        NumberFormat format = NumberFormat.getNumberInstance();

        double num = 175570;
        String sn = format.format(num);
        System.out.println(sn); // 175,570

        NumberFormat format1 = NumberFormat.getCurrencyInstance();

        double num1 = 175570;
        String st = format1.format(num1);
        System.out.println(st); // $175,570.00


        //-------------------   BD locale --------------
        NumberFormat format2 = NumberFormat.getNumberInstance(new Locale("en","BD"));

        double num2 = 175570;
        sn = format2.format(num2);
        System.out.println(sn); // 175,570

        NumberFormat format3 = NumberFormat.getCurrencyInstance(new Locale("en","bd"));
        st = format3.format(num);
        System.out.println(st); // BDT175,570.00

        // if wrong locale is used then
        // Number: 175,570
        // Currency: �175,570.00

    }


}