java中的大整数类BigInteger处理大整数——小小钟

/*
1^1+2^2+3^3+4^4+...+1000^1000的后10位数
*/

import java.math.BigInteger;

public class Test01 {

public static void main(String[] args) {
test01(1000);
}

public static void test01(long n){

BigInteger bp = null;
BigInteger bsum = new BigInteger(0+"");
BigInteger ba = new BigInteger(1+"");

for(int i=1;i<=n;i++){
bp = new BigInteger(i+"");
ba = bp.pow(i);
bsum = bsum.add(ba);
}

System.out.println(bsum);

String strSum = bsum+"";
System.out.println(strSum.substring(strSum.length()-10));
}

}