java: incompatible types: possible lossy conversion from long to int

This error occurs when you try to assign a long value to an int variable, and the long value is too large to be represented as an int. In Java, long is a 64-bit signed integer, while int is a 32-bit signed integer. Therefore, if you try to assign a long value that is larger than the maximum value of an int (2147483647), the compiler will generate an error.

For example, the following code will generate the error "incompatible types: possible lossy conversion from long to int":

long myLong = 1234567890;
int myInt = myLong;

To fix this error, you can either change the type of the variable to long, or you can cast the long value to an int using the (int) operator. However, be aware that casting a long value to an int may result in data loss, as the long value may be too large to fit into the int variable.