how to change double to int in java

To change a double value to an int value in Java, you can use the (int) cast operator.

Here's an example of how you might do this:

double d = 3.14;
int i = (int) d;

System.out.println(i);  // Output: 3

In this example, the (int) cast operator is used to convert the value of d, which is a double, to an int. The value of d is truncated, not rounded, so the resulting int value will be 3.

Note that this method of converting a double to an int can result in loss of precision, as the fractional part of the double value will be discarded. If you need to preserve the precision of the double value, you may want to consider using a different method, such as using a BigDecimal or a string representation of the double value.