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

Source: Internet
Author: User

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.

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.