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F.java

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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);

}

}