为什么我可以在循环中创建具有相同名称的多个实例？ [英] Why can I create multiple instances with the same name in a loop?

问题描述

我不明白为什么这个工作，我希望有人能解释给我。
这里是一个例子：

$ $ $ $ $ $ $ $ TestObject array [] = new TestObject [10];
for（int i = 0; i <= 10; i ++）{
TestObject object = new TestObject（）;

object.setValue（i）;
array [i] = object;
System.out.println（array [i] .getObject（））;





$ b为什么我可以创建多个具有相同名称的TestObject循环？
通常您不能创建具有相同名称的实例：

  TestObject o = new TestObject（1）; 
 TestObject o = new TestObject（2）; 
  

好的，这显然会引发错误...

循环，的作用域限于迭代。因此，在每次迭代中创建和销毁 TestObject对象。

I don't understand why this works and I hope somebody can explain it to me. Here is an example:

TestObject array[] = new TestObject[10];
for(int i= 0; i <= 10; i++){
    TestObject object = new TestObject();

     object.setValue(i);
     array[i] = object;
    System.out.println(array[i].getObject());
}

Why can I create multiple instances of "TestObject" with the same name in the loop? Usually you can't create instances with the same name:

TestObject o = new TestObject(1);
TestObject o = new TestObject(2);

Well, this will obviously throws an error...

解决方案

The scope for a for loop is limited to the iteration. So TestObject object is created and destroyed in each iteration.

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