In Java, short S1 = 1; S1 = S1 + 1; what is the error? Short S1 = 1; S1 + = 1; what is the error?

S1 = S1 + 1; this statement is incorrect. S1 is of the short type, which occupies 2 bytes. S1 + 1 is automatically converted to the int type, which occupies 4 bytes, if the short type variable S1 is assigned, the precision of two bytes is lost, which is not allowed. If you want to do this, you can write as follows:

S1 = (short) (S1 + 1 );

Short S1 = 1; S1 + = 1; this is correct. S1 + = 1 is equivalentS1 = (short) (S1 + 1 ).

S1 = S1 + 1; it is equivalent to S1 + = 1. Although it means that, in JVM, it is implemented by different methods. It is an operator overload, so it is different.