Affects PMD Version:
6.22.0
Rule:
StringToString
Description:
StringToString can not detect the case: getStringMethod().toString()
This rule is implemented in File: pmd-java-6.22.0-sources.jar!\net\sourceforge\pmd\lang\java\rule\performance\StringToStringRule.java
Firstly, this method visits ASTVariableDeclaratorId node and gets variables of type String or String[], and then check whether these variables call toString() method.
Calling toString() by another method that return String may be ignored.
Code Sample demonstrating the issue:
public class Test{
public String foo(){
String bar = "foobar";
return bar;
}
public void test(){
String fooStr = foo().toString();
}
}
Expected outcome:
false-negative
Running PMD through:
CLI
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