报错的完整信息：

No enclosing instance of type OutterClass is accessible. Must qualify the allocation with an enclosing instance of type OutterClass (e.g. x.new A() where x is an instance of OutterClass).

错误的出现背景：

Java

在类中添加内部类，并在main函数中通过语句：

OutterClass.InnerClass innerClass = new OutterClass.InnerClass();

试图构造内部类对象时出现。

完整结构如下：

public class OutterClass {

	class InnerClass {
		
		void print() {
			System.out.println("this is innerClass");
		}
		
	}
	
	public static void main(String[] args) {
		OutterClass.InnerClass innerClass = new OutterClass.InnerClass();
		innerClass.print();
	}
	
}

思考：