Page Information

Title:	NUM12-J. Ensure conversions of numeric types to narrower types do not result in lost or misinterpreted data
Author:	David Svoboda	Feb 22, 2011
Last Changed by:	David Svoboda	Aug 06, 2025
Tiny Link: (useful for email)	https://wiki.sei.cmu.edu/confluence/x/HjZGBQ
Export As:	Word · PDF

SEI CERT Oracle Coding Standard for Java (2)     Page: FIO08-J. Distinguish between characters or bytes read from a stream and -1     Page: NUM11-J. Do not compare or inspect the string representation of floating-point values

Parent Page     Page: Rule 03. Numeric Types and Operations (NUM)

• android-applicable
• android
• num
• rule

Time	Editor
Aug 06, 2025 10:24	Amy Gale	View Changes
REM cost reform
Jan 31, 2025 00:46	Amy Gale	View Changes
Localize CodeSonar crossreferences to Java scope
Jan 14, 2025 09:57	David Svoboda	View Changes
Dec 12, 2024 01:34	Valery	View Changes
Dec 12, 2024 01:32	Valery

External Links (14)
    https://www.safaribooksonline.com/library/view/secure-codin…
    https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?p…
    https://wiki.sei.cmu.edu/confluence/display/java/PVS-Studio
    https://wiki.sei.cmu.edu/confluence/display/java/Rule+AA.+R…
    cwe.mitre.org/data/definitions/681.html
    https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?p…
    cwe.mitre.org/
    docs.oracle.com/javase/specs/jls/se8/html/jls-5.html#jls-5.…
    docs.oracle.com/javase/specs/jls/se8/html/jls-4.html#jls-4.…
    https://pvs-studio.com/en/docs/warnings/v6124/
    cwe.mitre.org/data/definitions/197.html
    java.sun.com/docs/books/jls/third_edition/html/conversions.…
    https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?p…
    java.sun.com/docs/books/jls/third_edition/html/conversions.…

SEI CERT C Coding Standard (3)     Page: INT31-C. Ensure that integer conversions do not result in lost or misinterpreted data     Page: FLP34-C. Ensure that floating-point conversions are within range of the new type     Home page: SEI CERT C Coding Standard

SEI CERT Oracle Coding Standard for Java (9)     Page: Parasoft_V     Page: CodeSonar     Home page: SEI CERT Oracle Coding Standard for Java     Page: PVS-Studio_V     Page: Rule AA. References     Page: NUM53-J. Use the strictfp modifier for floating-point calculation consistency across platforms     Page: CodeSonar_V     Page: NUM00-J. Detect or prevent integer overflow     Page: Parasoft