for(int i = 0; i<qzjlist.size(); i++)
{
TB_NB_MACHINE ma = (TB_NB_MACHINE) qzjlist.get(i);
String count=ma.getM_count().toString();
int qzj_count = Integer.parseInt(count);
int sum =0;
sum +=qzj_count;
double baifenbi = ((double)qzj_count/between);
DecimalFormat df = new DecimalFormat("##.##");
String str = df.format(baifenbi);
wsheet.addCell(new Label(0,i+1,ma.getM_name()));
wsheet.addCell(new Label(1,i+1,ma.getM_count()));
wsheet.addCell(new Label(2,i+1,str));
}
怎么实现 sum是 总和呢?