java中实现四舍五入

<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script> public int getRound(double dSource){ int iRound //BigDecimal的构造函数参数类型是double BigDecimal deSource = new BigDecimal(dSource); //deSource.setScale(0,BigDecimal.ROUND_HALF_UP) 返回值类型 BigDecimal //intValue() 方法将BigDecimal转化为int iRound= deSource.setScale(0,BigDecimal.ROUND_HALF_UP).intValue(); return iRound; }