import java.math.*;
import java.util.*;
//import java.lang.*; by default
public class Tere {
    int field;
    public static void main(String[] args) {
        Tere t;
        t=new Tere();
        t.field =77;
        System.out.println("field="+t.field)

        /*
         * for(int k=1;k<=10;k++) System.out.println("Tervist!"+k+". korda");
         */

        String v6ti = "user.name";
        String nimi = System.getProperty(v6ti);
        System.out.println("Tervist, " + nimi);
        System.out.println(System.getProperty("os.name"));
        System.out.println(Math.tan(120. / 180 * Math.PI));
        Calendar c = Calendar.getInstance();
        System.out.println(c.get(Calendar.DAY_OF_MONTH) + ":"
                + c.get(Calendar.DAY_OF_WEEK));
        for (int i = 0; i < 256; i++)
            System.out
                    .println(i + "\t" + Integer.toOctalString(i) + "\t"
                            + Integer.toBinaryString(i) + "\t"
                            + Integer.toHexString(i));

    }

}