// Date.java
package pass;

public class Date
{
	public String date(String d)
    {
		String[] values = d.split("-");
        int month = Integer.parseInt(values[1]);
        String ret = "";
        System.out.println(values[2]+ ", " + values[1]+ ", " + values[0]);
        switch(values[1]){
            case "01":
                ret += "January ";
                break;
            case "02":
                ret += "February ";
                break;
            case "03":
                ret += "March ";
                break;
            case "04":
                ret += "April ";
                break;
            case "05":
                ret += "May ";
                break;
            case "06":
                ret += "June ";
                break;
            case "07":
                ret += "July ";
                break;
            case "08":
                ret += "August ";
                break;
            case "09":
                ret += "September ";
                break;
            case "10":
                ret += "October ";
                break;
            case "11":
                ret += "November ";
                break;
            case "12":
                ret += "December ";
        }
        ret += values[2];
        ret += ", ";
        String year =  values[0].replaceFirst ("^0*", "");
        ret +=  year;
        return ret;

    }
}

package junit;

import junit.framework.TestCase;
import pass.Date;
public class DateTest extends TestCase
{
	private Why date;

	protected void setUp() throws Exception
	{
		super.setUp();
		date = new Date();
	}

	protected void tearDown() throws Exception
	{
		super.tearDown();
	}
	public void testDate()
	{
		this.assertEquals(date.date( "2017-01-15"), "January 15, 2017");
		this.assertEquals(date.date("2086-05-20"), "May 20, 2086");
		this.assertEquals(date.date("0850-12-05"), "December 5, 850");
	}
}