java 浮点数计算的问题，计算要用BigDecimal

java 浮点数计算的问题，计算要用BigDecimal



Double a = 10.6;

Double b = 5.3 ;

System.out.println("===result1==="+(10.6+5.3));

System.out.println("===result2==="+(a+b));

System.out.println("===result3==="+(new BigDecimal("10.6").add(new BigDecimal("5.3"))));



输出结果：

===result1===15.899999999999999

===result2===15.899999999999999

===result3===15.9