F.java

class F {
 final static String SPACES = " 
 ";
 public static String format(String s, int len){
	int slen = len-s.length();

	if(slen > SPACES.length())
	 slen = SPACES.length();
 
	if(slen > 0)
	 return SPACES.substring(0,slen)+s;
	else
	 return s;

 }

 public static String format(Object x, int len){
	return format(String.valueOf(x), len);
 }

 public static String format(long x, int len){
	return format(String.valueOf(x), len);
 }

 public static String format(double x, int len){
	return format(String.valueOf(x), len);
 }

 public static String format(char x, int len){
	return format(String.valueOf(x), len);
 }
}