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How to convert day of year to day of month?

package com.javacoderanch.example.java.util;

import java.util.Calendar;

public class DayYearToDayMonth 
{
    public static void main(String[] args)
    {
        // Create an instance of calendar for the year 2007 and set its day to
        // the 180 day of the year.
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, 2007);
        cal.set(Calendar.DAY_OF_YEAR, 180);
                
        // Print the date of the calendar.
        System.out.println("Calendar date is: " + cal.getTime());

        // To know what day in month of the calendar we can obtain the value
        // by calling Calendar's instance get() method and pass the
        // Calendar.DAY_OF_MONTH field.
        int dayOfMonth = cal.get(Calendar.DAY_OF_MONTH);
                
        // Print which month day is it in number.
        System.out.println("Calendar day of month: " + dayOfMonth);
        
        // To know what day in week of the calendar we can obtain the value
        // by calling Calendar's instance get() method and pass the
        // Calendar.DAY_OF_WEEK field.
        int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
        
        // Print which week day is it in number.
        System.out.println("Calendar day of week: " + dayOfWeek);
    }
}

The result of our above example is.

Calendar date is: Fri Jun 29 18:24:07 ICT 2007
Calendar day of month: 29
Calendar day of week: 6