为什么Java不支持多重继承

interface Interface1 {
   public void method1();
}
 
interface Interface2 {
   public void method2();
}
 
class MyClass implements Interface1, Interface2 {
  public void method1() {
       System.out.println("method1");
   }
   public void method2() {
       System.out.println("method2");
   }
}