Java 是否有任何理由对同一类中的重载方法使用后期/静态绑定?

Is there any specific reason why Java uses early binding for overloaded methods? Wouldn't it be possible to use late binding for this?

例子:

public class SomeClass {

    public void doSomething(Integer i) {
        System.out.println("INTEGER");
    }

    public void doSomething(Object o) {
        System.out.println("OBJECT");
    }

    public static void main (String[] args) {
        Object i = new Integer(2);
        Object o = new Object(); 
        SomeClass sc = new SomeClass();
        sc.doSomething(i);
        sc.doSomething(o); 
    } 
}

打印:OBJECT OBJECT

public class MyClass
{
  public void foo(Integer i)
  {
    System.out.println("Integer");
  }
  public void foo(String s)
  {
    System.out.println("String");
  }
  public static void main(String[] args)
  {
    Object o1=new String("Hello world");
    foo(o1);
    Object o2=new Double(42);
    foo(o2);
  }
}