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V6054. Classes should not be compared b…
Analyzer Diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
Additional information
Contents

V6054. Classes should not be compared by their name.

July 25, 2018

The analyzer has detected class comparison by name. Such comparison is considered incorrect since, as stated by the JVM specification, classes have unique names only inside a package.

In addition to logical errors, such code may sometimes get exposed to various vulnerabilities due to unknown behavior of an untrusted class.

Consider the following example:

if (obj.getClass().getSimpleName().equals("Plane"))
{
  ....
}

This code should be rewritten as follows:

if(obj.getClass().equals(ArrayList.class))
{
  ....
}

or:

if (obj instanceof Plane)
{
  ....
}

or:

if (obj.getClass().isAssignableFrom(Plane.class))
{
  ....
}

This diagnostic is classified as:

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