main.java

来自「java的经典例子」· Java 代码 · 共 14 行

import java.math.*;

class Main {
    public static void main(String[] args) {
//
        BigInteger a = new BigInteger("123");
        System.out.println(a.longValue());  // 123

        a = new BigInteger("31323423423419083091823091283933");
        System.out.println(a.longValue());  // -5251313250005125155
//
    }
}