为什么两个整数的分割在Java中返回0.0？ [英] Why does the division of two integers return 0.0 in Java?

问题描述

  int totalOptCount = 500; 
 int totalRespCount = 1500; 
 float percentage =（float）（totalOptCount / totalRespCount）; 
  

为什么总是返回值0.0？我也想把它格式化为00.00格式并转换成字符串？

解决方案

完成。您需要：

$ $ $ $ $ $ $ $ $ $ $>浮点百分比=（（float）totalOptCount）/ totalRespCount;

您应该可以使用类似的格式：

  String str = String.format（％2.02f，percentage）; 
  

int totalOptCount = 500;
int totalRespCount=1500; 
float percentage =(float)(totalOptCount/totalRespCount);

Why does this always return value 0.0? Also I want to format this into 00.00 format and convert into string?

解决方案

Because the conversion to float happens after the division has been done. You need:

float percentage = ((float) totalOptCount) / totalRespCount;

You should be able to format using something like:

String str = String.format("%2.02f", percentage);

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