Given public class Fishing { byte b1 = 4; int i1 = 123456; long L1 = (long) i1; / /Line A short s2 = (short) i1; / /Line B byte b2 = (byte) i1; / /Line C int i2 = (int) 123.456; / /Line D byte b3 = b1 + 7; / /Line E } Which lines WILL NOT compile? (Choose all that apply)

Line E.

Explanation:

The given program is as follows:

public class Fishing {

byte b1 = 4; int i1 = 123456; long L1 = (long) i1; / /Line A

short s2 = (short) i1; / /Line B

byte b2 = (byte) i1; / /Line C

int i2 = (int) 123.456; / /Line D

byte b3 = b1 + 7; / /Line E

}

In the above code Line E will not compile and give following compilation error:

error: incompatible types: possible lossy conversion from int to byte

This error is coming because in Java b1 + 7 will be interpreted as int variable expression. Therefore in order to make code of Line E work the expression should be type casted as byte.

The correct code will be as follows:

public class Fishing {

byte b1 = 4; int i1 = 123456; long L1 = (long) i1; / /Line A

short s2 = (short) i1; / /Line B

byte b2 = (byte) i1; / /Line C

int i2 = (int) 123.456; / /Line D

byte b3 = (byte) (b1 + 7); / /Line E

}