Remove the non-escaped \u00A0 character from this literal. Open
assertEquals("1 234,23456789012", f.getValueDisplay(Locale.FRANCE));
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- Exclude checks
Non-encoded control characters and whitespace characters are often injected in the source code because of a bad manipulation. They are either
invisible or difficult to recognize, which can result in bugs when the string is not what the developer expects. If you actually need to use a control
character use their encoded version (ex: ASCII \n,\t,
... or Unicode U+000D, U+0009,
...).
This rule raises an issue when the following characters are seen in a literal string:
- ASCII control character. (character index < 32 or = 127)
- Unicode whitespace characters.
- Unicode C0 control characters
- Unicode characters
U+200B, U+200C, U+200D, U+2060, U+FEFF, U+2028, U+2029
No issue will be raised on the simple space character. Unicode U+0020
, ASCII 32.
Noncompliant Code Example
String tabInside = "A B"; // Noncompliant, contains a tabulation String zeroWidthSpaceInside = "foobar"; // Noncompliant, it contains a U+200B character inside char tab = ' ';
Compliant Solution
String tabInside = "A\tB"; // Compliant, uses escaped value String zeroWidthSpaceInside = "foo\u200Bbar"; // Compliant, uses escaped value char tab = '\t';
Exceptions
Text Blocks string literals (java 13 three double-quote marks) can contain tabulations to allow indentation using tabulations.
Remove the non-escaped \u00A0 character from this literal. Open
assertEquals("1 234,567", f.getValueDisplay(3, Locale.FRANCE));
- Read upRead up
- Exclude checks
Non-encoded control characters and whitespace characters are often injected in the source code because of a bad manipulation. They are either
invisible or difficult to recognize, which can result in bugs when the string is not what the developer expects. If you actually need to use a control
character use their encoded version (ex: ASCII \n,\t,
... or Unicode U+000D, U+0009,
...).
This rule raises an issue when the following characters are seen in a literal string:
- ASCII control character. (character index < 32 or = 127)
- Unicode whitespace characters.
- Unicode C0 control characters
- Unicode characters
U+200B, U+200C, U+200D, U+2060, U+FEFF, U+2028, U+2029
No issue will be raised on the simple space character. Unicode U+0020
, ASCII 32.
Noncompliant Code Example
String tabInside = "A B"; // Noncompliant, contains a tabulation String zeroWidthSpaceInside = "foobar"; // Noncompliant, it contains a U+200B character inside char tab = ' ';
Compliant Solution
String tabInside = "A\tB"; // Compliant, uses escaped value String zeroWidthSpaceInside = "foo\u200Bbar"; // Compliant, uses escaped value char tab = '\t';
Exceptions
Text Blocks string literals (java 13 three double-quote marks) can contain tabulations to allow indentation using tabulations.