date_before_n.java

这个程序是花了好几十万请人开发的

package Bean;
import java.util.*;

public class Date_before_n
{

	public Date_before_n()
	{
	}
		
    public String nDate(int n) {
	String strOut = "";
	Calendar rightNow = Calendar.getInstance();
	rightNow.add(Calendar.DAY_OF_MONTH,-n);
	java.text.SimpleDateFormat dft = new java.text.SimpleDateFormat("yyyy-MM-dd");
	strOut = dft.format(rightNow.getTime());
	return strOut;
  }
					
}