SEI CERT Oracle Coding Standard for Java

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changes.mady.by.user Shannon Haas

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changes.mady.by.user Masaki Kubo

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Code Block
bgColor#FFcccc
FileInputStream in;
// initialize stream 
byte data;
while ((data = (byte) in.read()) != -1) { 
  // ... 
}

When the return value of read() method in this noncompliant code example returns is cast to the byte value 0xFF, it will be indistinguishable from the -1 value used to indicate the end of stream, because the byte value is promoted and sign extended to an int before being compared with -1.

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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="857e53776220e7ef-e259038c-44ed4145-adbd801d-004ac1ad201bbb0490079d37"><ac:plain-text-body><![CDATA[

[[API 2006

AA. Bibliography#API 06]]

Class InputStream

]]></ac:plain-text-body></ac:structured-macro>

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="2596d7908389d6ba-85170a86-4ed7418f-ada58228-bf1638e01d51adea3595d934"><ac:plain-text-body><![CDATA[

[[JLS 2005

AA. Bibliography#JLS 05]]

[§4.2

http://java.sun.com/docs/books/jls/third_edition/html/typesValues.html#4.2] "Primitive Types and Values"

]]></ac:plain-text-body></ac:structured-macro>

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="9bbe799ac7847f64-f0ec7ff8-4dd34133-bb0ebce9-c990f29c253d1cdfecaaa0f1"><ac:plain-text-body><![CDATA[

[[Pugh 2008

AA. Bibliography#Pugh 08]]

"Waiting for the end"

]]></ac:plain-text-body></ac:structured-macro>

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