Answers for "java biginteger from strinbg"

convert biginteger to string java

// create 2 String objects
      String s1, s2;

      bi1 = new BigInteger("1234");
      bi2 = new BigInteger("-1234");

      // assign String value of bi1, bi2 to s1, s2
      s1 = bi1.toString();
      s2 = bi2.toString();

transformer un string en Biginteger java

public BigInteger toBigInteger(String foo)
{
    return new BigInteger(foo.getBytes());
}

public String fromBigInteger(BigInteger bar)
{
    return new String(bar.toByteArray());
}