java中实现四舍五入

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/* 336x280, 创建于 07-11-21 */

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//

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;

}