public static void main(String[] args) throws InterruptedException{
long sTime = new Date().getTime();
Thread.sleep(3234);
long eTime = new Date().getTime();
float diff = ((eTime-sTime)/1000);
System.out.println(diff);
}
在上面的代码中,我期望输出为3.234但它是3.0。我希望在几秒钟内两次之间有确切的差异,并有一个小数部分。
最佳答案
您正在执行积分除法而不是浮点除法。尝试这个:
float diff = ((float)(eTime-sTime)/1000.0);
当您使用
long
时,我进一步建议您使用double
数据类型以提高精度:double diff = ((double)(eTime-sTime)/1000.0);