public final class StringLiteralsConcatenationCheck extends AbstractCheck
The following constructs are prohibited:
String a = "done in " + time + " seconds"; System.out.println("File not found: " + file); x += "done";
You should avoid string concatenation at all cost. Why? There are two
reasons: readability of the code and translateability. First of all it's
difficult to understand how the text will look after concatenation,
especially if the text is long and there are more than a few +
operators. Second, you won't be able to translate your text to other
languages later, if you don't have solid string literals.
There are two alternatives to concatenation: StringBuilder
and String.format(String,Object[])
.
AutomaticBean.OutputStreamOptions
Constructor and Description |
---|
StringLiteralsConcatenationCheck() |
Modifier and Type | Method and Description |
---|---|
int[] |
getAcceptableTokens() |
int[] |
getDefaultTokens() |
int[] |
getRequiredTokens() |
void |
visitToken(DetailAST ast) |
beginTree, clearMessages, destroy, finishTree, getClassLoader, getFileContents, getLine, getLines, getMessages, getTabWidth, getTokenNames, init, isCommentNodesRequired, leaveToken, log, log, log, setClassLoader, setFileContents, setTabWidth, setTokens
finishLocalSetup, getCustomMessages, getId, getMessageBundle, getSeverity, getSeverityLevel, setId, setSeverity
configure, contextualize, getConfiguration, setupChild
public int[] getDefaultTokens()
getDefaultTokens
in class AbstractCheck
public int[] getAcceptableTokens()
getAcceptableTokens
in class AbstractCheck
public int[] getRequiredTokens()
getRequiredTokens
in class AbstractCheck
public void visitToken(DetailAST ast)
visitToken
in class AbstractCheck
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