A software security expert reviews the following Java code based on best practices and provides the following answer. Is it True or False?

Exercise $1.$ Given the below Java method, are there any $($syntactical$,$ semantical, logical$)$ errors? What can be improved from the security$-$compliance perspective? If there are security$-$related issues, how can we fix them?

$```$

class MyClass $\{$

private int a $=$ l;

private void doLogic$()($

int a; $//...$

$\}$

$\}$

$```$

Answer.

This security$-$noncompliant code example reuses the name of the yal instance field in the scope of an instance method.

The resulting behavior can be classified as shadowing; the method variable renders the class variable inaccessible within the scope of the method.

Example: assigning to this.val from within the method does not affect the value of the class variable.

class MyVector $\backslash \{$

private int yal $=\backslash (\backslash$underline$\{\backslash$underline$\{1\}\}\backslash )$;

private void doLogic$)\backslash \{$

int newValue;

$//...$

$\backslash \}$

$\backslash \}$

This security$-$compliant solution eliminates shadowing by changing the name of the variable defined in the method scope from yal to newValue.