The program violates secure coding principles for mobile code by declaring an array public
, final
and static
.
In most cases an array declared public
, final
and static
is a bug. Because arrays are mutable objects, the final
constraint requires that the array object itself be assigned only once, but makes no guarantees about the values of the array elements. Since the array is public, a malicious program can change the values stored in the array. In most situations the array should be made private
.
Example 1: The following Java Applet code mistakenly declares an array public
, final
and static
.
public final class urlTool extends Applet {
public final static URL[] urls;
...
}
[1] Standards Mapping - Common Weakness Enumeration - (CWE) CWE ID 582
[2] G. McGraw Securing Java. Chapter 7: Java Security Guidelines