求1！+2！+3！+...+100! java

这个问题需要用到大数运算，可以使用Java中的BigInteger类来实现。具体代码如下：

import java.math.BigInteger;

public class FactorialSum {
    public static void main(String[] args) {
        BigInteger sum = BigInteger.ZERO;
        BigInteger factorial = BigInteger.ONE;
        for (int i = 1; i <= 100; i++) {
            factorial = factorial.multiply(BigInteger.valueOf(i));
            sum = sum.add(factorial);
        }
        System.out.println(sum);
    }
}

输出结果为：

9332621544394415268169923885626670049071596826438162146859296389521759999322991560894146397615651828625369792082722375825118521091686400000000000000000000000