Concatenation with empty string
Reports empty string operands in string concatenations. Concatenation with the empty string can be used to convert non-String objects or primitives into Strings, but it can be clearer to use a String.valueOf() method call.
A quick-fix is suggested to simplify the concatenation.
Example:
After the quick-fix is applied:
Locating this inspection
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
ConcatenationWithEmptyString- Via Settings dialog
Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.
Use the Report only where empty strings can be removed without other changes option to ignore cases cases where removing the empty string will require adding a String.valueOf() conversion of another operand.
Inspection options
Here you can find the description of settings available for the Concatenation with empty string inspection, and the reference of their default values.
- Report only where empty strings can be removed without other changes
Default value:
Selected
Suppressing Inspection
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
Inspection Details | |
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By default bundled with: |