Possible confusion of local and field¶
ID: java/local-shadows-field Kind: problem Security severity: Severity: recommendation Precision: high Tags: - quality - maintainability - readability Query suites: - java-code-quality.qls - java-security-and-quality.qls
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If a method declares a local variable with the same name as a field, then it is very easy to mix up the two when reading or modifying the program.
Recommendation¶
Consider using different names for the field and local variable to make the difference between them clear.
Example¶
The following example shows a local variable values that has the same name as a field.
public class Container { private int[] values; // Field called 'values' public Container (int... values) { this.values = values; } public Container dup() { int length = values.length; int[] values = new int[length]; // Local variable called 'values' Container result = new Container(values); return result; } }
References¶
Help - Eclipse Platform: Java Compiler Errors/Warnings Preferences.
Java Language Specification: 6.4 Shadowing and Obscuring.