PMD在Sun Security规则集中有一个名为ArrayIsStoredDirectly的规则:
Constructors and methods receiving arrays should clone objects and store the copy. This prevents that future changes from the user affect the internal functionality.
这是他们的例子:
public class Foo { private String [] x; public void foo (String [] param) { // Don't do this,make a copy of the array at least this.x=param; } }
我不认为我完全理解这个规则背后的原因.是因为传递的数组中的值可以在其他地方更改吗?传递Collection与传递数组有什么区别?