Numeric cast that loses precision

Reports cast operations between primitive numeric types that may result in precision loss.

Such casts are not necessarily a problem but may result in difficult to trace bugs if the loss of precision is unexpected.

Example:

Use the Ignore casts from int to char option to ignore casts from int to char. This type of cast is often used when implementing I/O operations because the read() method of the java.io.Reader class returns an int.

Use the Ignore casts from int 128-255 to byte option to ignore casts of constant values (128-255) from int to byte. Such values will overflow to negative numbers that still fit inside a byte.