如何直接将 Double 转换为 int？

也许这是个愚蠢的问题。我想去掉 Double数的小数部分。但我做不到。它显示不兼容类型的错误。怎么办？

Double to int转换成一行... ... 请帮忙，谢谢

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try casting the value

double d = 1.2345;
long l = (long) d;

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最佳答案

If you really should use Double instead of double you even can get the int Value of Double by calling:

Double d = new Double(1.23);
int i = d.intValue();

Else its already described by Peter Lawreys answer.

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All other answer are correct, but remember that if you cast double to int you will loss decimal value.. so 2.9 double become 2 int.

You can use Math.round(double) function or simply do :

(int)(yourDoubleValue + 0.5d)

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int average_in_int = ( (Double) Math.ceil( sum/count ) ).intValue();

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double myDb = 12.3;
int myInt = (int) myDb;

Result is: myInt = 12