如何在java中获得除法结果的全分数值？
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How to get the full fraction value of a division result in java?
提问by Nair
I am new to Java and I am using DrJava IDE for my testing. I have the following division 49700/40000 and it displays 1.0 instead of 1.2425.
我是 Java 新手，我正在使用 DrJava IDE 进行测试。我有以下分区 49700/40000，它显示 1.0 而不是 1.2425。
double t = 49700/40000; System.out.println(t);
double t = 49700/40000; System.out.println(t);
Is it something I am doing wrong?
这是我做错了吗？
采纳答案by Dev
Try, this instead:
试试，这个：
double t = 49700/40000.0;
System.out.println(t);
If both operands are integers the result will be an integer which will be truncated, and then it will be cast in to a double. If, instead, one of the operands is a double, the result will be a double.
如果两个操作数都是整数，则结果将是一个将被截断的整数，然后将其转换为双精度值。相反，如果其中一个操作数是双精度数，则结果将是双精度数。
回答by Gaurav Varma
Use float for decimal number computations
使用浮点数计算十进制数
