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？