BigInteger类
可以让超过Integer范围内的数据进行运算
构造方法
public BigIntege(String val);
package com.jacky; import java.math.BigInteger; public class IntegerDemo { public static void main(String[] args) { // TODO Auto-generated method stub Integer i = new Integer(100); System.out.println(Integer.MAX_VALUE); System.out.println(Integer.MIN_VALUE); BigInteger bi = new BigInteger("2147483648"); System.out.println("bi:" + bi); } }
/*
* public BigInteger add(BigInteger val);//加
* public BigInteger subtract(BigInteger val);//减
* public BigInteger multiply(BigInteger val);//乘
* public BigInteger divide(BigInteger val);//除
* public BigInteger[] divideAndRemainder(BigInteger val);//返回商和余数的数组
* */
import java.math.BigInteger; /* * public BigInteger add(BigInteger val);//加 * public BigInteger subtract(BigInteger val);//减 * public BigInteger multiply(BigInteger val);//乘 * public BigInteger divide(BigInteger val);//除 * public BigInteger[] divideAndRemainder(BigInteger val);//返回商和余数的数组 * */ public class IntegerDemo { public static void main(String[] args) { // TODO Auto-generated method stub BigInteger bi1 = new BigInteger("100"); BigInteger bi2 = new BigInteger("50"); System.out.println("add:" + bi1.add(bi2)); System.out.println("subtract:" + bi1.subtract(bi2)); System.out.println("multiply:" + bi1.multiply(bi2)); System.out.println("divide:" + bi1.divide(bi2)); BigInteger bis[] = bi1.divideAndRemainder(bi2); System.out.println("商:" + bis[0]); System.out.println("余数、:" + bis[1]); } }