inner-classes

问题 I have a requirement in which 28 threads have to complete some functionality. I have created these threads as in anonymous inner classes like : Thread t=new Thread(new Runnable(){public void run() {//code }} ); t.start(); Now I want that the further execution should start after all these threads have finished there work. Note : I am confused about join() method as it makes my threads run sequentially. So can anyone suggest me how can I make main thread run once these threads are done with

来源： https://stackoverflow.com/questions/12786074/anonymous-class-with-interface

来源： https://stackoverflow.com/questions/12786074/anonymous-class-with-interface

问题 I'm trying to write a class that exposes an inner data structure to its consumers, a data structure that the class itself will be using. Example: class Outer { static Inner = class { inInner: number }; constructor(public inner: Outer.Inner) { } } The problem here is that Outer.Inner is not recognized as a type. The only answers that I've found are workarounds (in Typescript playground). I'm wondering if there are any elegant ways of doing this. Usecase: I have a bunch of Actions that are sent

问题 I'm trying to write a class that exposes an inner data structure to its consumers, a data structure that the class itself will be using. Example: class Outer { static Inner = class { inInner: number }; constructor(public inner: Outer.Inner) { } } The problem here is that Outer.Inner is not recognized as a type. The only answers that I've found are workarounds (in Typescript playground). I'm wondering if there are any elegant ways of doing this. Usecase: I have a bunch of Actions that are sent

问题 Basically, the question is if it is possible to add Lombok's @Builder and @AllArgsConstructor to static inner classes? I tried and it didn't, does anyone knows how to do it, or if it's possible? I used eclipse, Lombok version 1.18.4. The code where this happened is confidential, hence I can only show you a little mask version. error: constructor A in class A cannot be applied to given types; [ERROR] required: Map<String,B>,String,boolean [ERROR] found: no arguments [ERROR] reason: actual and

问题 Basically, the question is if it is possible to add Lombok's @Builder and @AllArgsConstructor to static inner classes? I tried and it didn't, does anyone knows how to do it, or if it's possible? I used eclipse, Lombok version 1.18.4. The code where this happened is confidential, hence I can only show you a little mask version. error: constructor A in class A cannot be applied to given types; [ERROR] required: Map<String,B>,String,boolean [ERROR] found: no arguments [ERROR] reason: actual and

问题 I'm trying to make a simple example of a user and bank program where you must guarantee that money cannot be cheated by someone who can add, inherit, implement current existing classes but cannot edit the initial ones. So I ask if you somehow can set someone's account's balance without the provided function for money transfer. I've tried using reflection but you have to have public constructors to make an object on which you call the private methods but since everything is private I cant call

问题 I really don't understand why the getMyClass2 method below cannot be static, why isn't it valid Java code? public class MyClass { private class MyClass2 { public String s1 = ""; public String s2 = ""; } private MyClass2 myClass2; private static MyClass2 getMyClass2() { MyClass2 myClass2 = new MyClass2(); return myClass2; } public MyClass() { myClass2 = getMyClass2(); } } 回答1: You have to say that the inner class is static because non-static is bound to the instance so it cannot be returned

问题 I know how to make an instance of an inner class. But I want to know why we can not do that in the following way: class outerclass{ public static void main(String[] args){ innerclass in=new innerclass(); } class innerclass{ } } If I do this then I get the following error: No enclosing instance of type outerclass is accessible. Must qualify the allocation with an enclosing instance of type outerclass (e.g. x.new A() where x is an instance of outerclass). Why? 回答1: class Demo{ public static