import java.io.FileNotFoundException; import java.io.PrintWriter; import java.text.DecimalFormat; public class FG { /** * @param args * @throws FileNotFoundException */ public static void main(String[] args) throws FileNotFoundException { DecimalFormat df = new DecimalFormat("B000000000"); PrintWriter pw = new PrintWriter("/home/mengzang/ilb.txt"); for (int i = 0; i < 1000005; i++) { String asin = df.format(i); pw.write(asin); } } }