package tomp.ucebnice.narodni;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.IOException;
import java.util.Locale;
import java.text.NumberFormat;
import java.text.DecimalFormat;
public class CislaMena {
    private PrintWriter pw;
    public CislaMena(PrintWriter pw) {
        this.pw = pw;
    }
    public void formatujCisla(Locale l) {
        long   cisloLong   = -1234567890l;
        int    cisloInt    = 123456789;
        short  cisloShort  = -12345;
        byte   cisloByte   = 123;
        float  cisloFloat  = 123.45f;
        double cisloDouble = -123e10;
        String vzorek1 = "00000.000";
        String vzorek2 = "#####.###";

        NumberFormat f = NumberFormat.getNumberInstance(l);
        NumberFormat menaF = NumberFormat.getCurrencyInstance(l);
        NumberFormat procentaF = NumberFormat.getPercentInstance(l);
        DecimalFormat vlastniF1 = (DecimalFormat)NumberFormat.getNumberInstance(l);
        vlastniF1.applyPattern(vzorek1);
        DecimalFormat vlastniF2 = (DecimalFormat)NumberFormat.getNumberInstance(l);
        vlastniF2.applyPattern(vzorek2);
        String[] formatovanaCisla = {
            "Jazyk = "+l.getDisplayLanguage(),
            "Země = "+l.getDisplayCountry(),
            "(long) " + cisloLong + " => " + f.format(cisloLong),
            "(int) " + cisloInt + " => " + f.format(cisloInt),
            "(short) " + cisloShort + " => " + f.format(cisloShort),
            "(byte) " + cisloByte + " => " + f.format(cisloByte),
            "(float) " + cisloFloat + " => " + f.format(cisloFloat),
            "(double) " + cisloDouble + " => " + f.format(cisloDouble),
            "(+float, měna) " + cisloFloat + " => " + menaF.format(cisloFloat),
            "(-float, měna) " + (-cisloFloat) + " => " + menaF.format(-cisloFloat),
            "(float, procenta) " + cisloFloat + " => " + procentaF.format(cisloFloat),
            "(float, vlastní formát '" + vzorek1 + "') " + cisloFloat 
                + " => " + vlastniF1.format(cisloFloat),
            "(float, vlastní formát '" + vzorek2 + "') " + cisloFloat 
                + " => " + vlastniF2.format(cisloFloat),
            "-----"
        };
        for (int i = 0; i < formatovanaCisla.length; i++)
            pw.println(formatovanaCisla[i]);
    }
    public static void main(String args[])
    throws IOException {
        CislaMena c = new CislaMena(
            new PrintWriter(
                new OutputStreamWriter(System.out, "Cp852"), true
            )
        );
        c.formatujCisla(new Locale("cs", "CZ"));
        c.formatujCisla(new Locale("sk", "SK"));
        c.formatujCisla(new Locale("en", "GB"));
        c.formatujCisla(new Locale("en", "US"));
        c.formatujCisla(new Locale("de", "DE"));
        c.formatujCisla(new Locale("fr", "FR"));
    }
}