大数类java.math.BigInteger

import java.math.BigInteger;

/**

*大数类

*/

public class dashu {

public static void main(String[] args) {

BigInteger one = new BigInteger("1");

BigInteger two = new BigInteger("2");

BigInteger three = new BigInteger("3");

BigInteger sum = new BigInteger("0");

/*sum=sum.add(one);

sum=sum.add(two);

sum=sum.add(three);

System.out.println(sum.toString());//6

*/

sum.add(one);

sum.add(two);

sum.add(three);

System.out.println(sum.toString());//0

}

}