- import java.math.BigDecimal;
- import java.math.BigInteger;
- public class Test {
- /**
- * @param args the command line arguments
- */
- public static void main(String[] args) {
- // 计算 1 到 30 的相乘的结果
- BigInteger sum=new BigInteger("1");
- for(int i=1;i<=30;i++)
- {
- sum=sum.multiply(new BigInteger(String.valueOf(i)));
- }
- System.out.println(sum);
- BigInteger bi1=new BigInteger("20000000002000000002");
- BigInteger bi2=new BigInteger("40000000004000000004");
- System.out.println(bi1.add(bi2));
- System.out.println(bi2.subtract(bi1));
- System.out.println(bi1.divide(new BigInteger("2")));
- BigDecimal bd1=new BigDecimal("20000000002000000000.0000000002");
- BigDecimal bd2=new BigDecimal("30000000003000000000.0000000003");
- System.out.println(bd1.add(bd2));
- System.out.println(bd2.subtract(bd1));
- System.out.println(bd2.divide(new BigDecimal("2")));
- System.out.println(bd2.multiply(new BigDecimal("2")));
- }
- }
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