写一个内部类,并在构造函数中初始化时,遇到报错,搜索问题后发现,有网友出现过类似的问题,下面这个是说的浅显明白的,并确实解决了问题.于是,以下内容照搬过来,不再多费键盘了. public class Test_drive { public static void main(String[] args){ A a = new A(); //报错 B b = new B(); //报错 System.out.println(b instanceof A); } class A{ int a; } c…

深夜,临睡前写了个小程序,出了点小问题 public class Test_drive { public static void main(String[] args){ A a = new A(); //报错 B b = new B(); //报错 System.out.println(b instanceof A); } class A{ int a; } class B extends A{ } } 上面两个语句报错信息如下: No enclosing instance of type T…

java - No enclosing instance is accessible. Must qualify the allocation with an enclosing instance of type (e.g. x.new A() where x is an instance of ) - Stack Overflow https://stackoverflow.com/questions/47541459/no-enclosing-instance-is-accessible-m…

这种情况一般发生在“在静态方法里面使用内部类” 测试代码: public class Test { public static void main(String[] args) { A a = new A(1); } class A { int x; public A() {} public A(int x) { this.x = x; } } } 上面这份代码在main函数里面会发生编译错误,为了解决问题,让我们先看看编译器的提示: 编译器告诉我们,没有可访问的Test类的实例,意味着下面将要…

最近在看Java,在编译写书上一个例子时,由于书上的代码只有一部分,于是就自己补了一个内部类.结果编译时出现:No enclosing instance of type E is accessible. Must qualify the allocation with an enclosing instance of type E(e.g.  x.new A() where x is an instance of E). E指代我写的那个内部类. 根据提示,没有可访问的内部类E的实例,必须分配一…

Java出现No enclosing instance of type E is accessible. Must qualify the allocation with an enclosing   最近在看Java,在编译写书上一个例子时,由于书上的代码只有一部分,于是就自己补了一个内部类.结果编译时出现:No enclosing instance of type E is accessible. Must qualify the allocation with an enclosing i…

原文:http://blog.csdn.net/sunny2038/article/details/6926079 最近在看Java,在编译写书上一个例子时,由于书上的代码只有一部分,于是就自己补了一个内部类.结果编译时出现:No enclosing instance of type E is accessible. Must qualify the allocation with an enclosing instance of type E(e.g.  x.new A() where x i…

在编译一个例子时,结果编译时出现: No enclosing instance of type test8 is accessible. Must qualify the allocation with an enclosing instance of type W (e.g. x.new A() where x is an instance of W). (W为文件名) 根据提示,没有可访问的内部类W的实例,必须分配一个合适的内部类W的实例(如x.new A(),x必须是W的实例.) 但是我已…

今天在编译Java程序的时候出现以下错误: No enclosing instance of type Main is accessible. Must qualify the allocation with an enclosing instance of type Main (e.g. x.new A() where x is an instance of Main). 我原来编写的源代码是这样的: public class Main {class Dog //定义一个“狗类”{privat…

No enclosing instance of type Demo is accessible. Must qualify the allocation with an enclosing instance of type Demo (e.g. x.new A() where x is an instance of Demo). 在练习一Demo时,遇到上面的编译时错误 原因:main是Test类的static方法,按照常理它只能访问Test类中static资源,而class A是非stati…