1.

package problemSetVolumes.volume003;

import java.math.BigInteger;
   import java.util.Scanner;

/**
   * FWP, Ausgewählte Probleme aus dem ACM Programming Contest, SS10 
   * Problem: 338 - Long Multiplication
   * Link: http://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=274
   * 
   * @author Siegfried Ippisch
   * @version 1.0
   * 
   * Method : -
   * Status : Accepted
   * Runtime: 2.620
   */
   public class LongMultiplication {
   
   public static void main(String[] args){
   Scanner in = new Scanner(System.in);
   
   while(true){
   long x = in.nextLong();
   if(!in.hasNext()) break;
   long y = in.nextLong();
   longMultiplicaton(x,y);
   System.out.println();
   }
   
   in.close();
   }

 private static void longMultiplicaton(long x, long y) {
   int nonZero = 0;
   
   // calculate values
   int[] y_ = intArray(y);
   int lengthY = y_.length;
   long[] res = new long[lengthY];
   BigInteger sum = BigInteger.ZERO;
   BigInteger mul = BigInteger.ONE;
   for(int i=lengthY-1; i>=0; i--){
   res[i] = x * y_[i];
   if(res[i] != 0)
   nonZero++;
   sum = sum.add(BigInteger.valueOf(res[i]).multiply(mul));
   mul = mul.multiply(BigInteger.TEN);
   }
   
   // lenghts
   int lengthX = (""+x).length();
   int lengthSum = (""+sum).length();
   int lengthXY = Math.max(lengthX, lengthY);
   int length = Math.max(lengthXY, lengthSum);
   
   // x, y, and the first line
   System.out.println(setLength(""+x,length));
   System.out.println(setLength(""+y,length));
   System.out.println(setLength(line(lengthXY),length));
   
   if(nonZero <= 1){
   System.out.println(setLength(""+sum,length));
   return;
   }
   
   // the next lines
   for(int i=lengthY-1, l=0; i>=0; i--,l++)
   if(res[i] != 0)
   System.out.println(setLength(""+res[i],length-l));
   
   // y has only one digit
   if(res.length == 1)
   return;
   
   // seccond line and result
   System.out.println(line(length));
   System.out.println(setLength(""+sum,length));
   }

 private static int[] intArray(long l) {
   char[] charArray = (l+"").toCharArray();
   int[] intArray = new int[charArray.length];
   for(int i=0; i<charArray.length; i++)
   intArray[i] = charArray[i]-'0';
   return intArray;
   }
   
   private static String setLength(String str, int length){
   while(str.length() < length)
   str = " " + str;
   return str;
   }
   
   private static String line(int length){
   String str = "";
   for(int i=0; i<length; i++)
   str += '-';
   return str;
   }
   }