init

Bean生命周期 Bean创建 -->初始化 -->销毁 1.自定义Bean初始化 和销毁的方法 init-method和destroy-method 创建Bike类 public class Bike { public Bike(){ System.out.println("Bike Constructor..."); } public void init(){ System.out.println("bike ...init..."); } public void destroy(){ System.out.println("bike ....destroy..."); } } 配置类 @Configuration public class MainConfig { @Bean(initMethod = "init",destroyMethod = "destroy") public Bike bike(){ return new Bike(); } } 测试 @Test public void test1(){ AnnotationConfigApplicationContext context=new AnnotationConfigApplicationContext(MainConfig.class); context.close(); }打印结果 Bike

When I first developed a java service for windows using apache daemon, I used the JVM mode which I liked a lot. You specify your class and start\stop (static) methods. But with Linux, Jsvc doesn't look like it has the same option. I would really like to know why ?! Anyway If I'm going to use Linux's init system, I'm trying to find a similar way to accomplish the same behavior which is to start the app in anyway but to stop it, I'll have to call a method in a class. My question is, after the jar is started, how can I use the jvm libraries or anything else, to call a method in my application

The code is from Stanford CS193p. I added a NSLog to check it out. The label seems not being initialized. Any idea? @interface AskerViewController() <UITextFieldDelegate> @property (weak, nonatomic) IBOutlet UILabel *questionLabel; @property (weak, nonatomic) NSString *question; @end @implementation AskerViewController @synthesize questionLabel = _questionLabel; @synthesize question = _question; - (void)setQuestion:(NSString *)question { _question = question; self.questionLabel.text = question; NSLog(@"label is %@", self.questionLabel); } @end The NSLog result is: 2012-07-31 01:56:45.177

I am creating a UIView subclass for a notification dropdown banner. I am using a XIB to build out the view and want to assign that xib to the class when it initializes (i.e. avoiding having to do this from the calling ViewController). Since you can't assign to 'self' in swift, how do I properly do this from within the class itself? class MyDropDown: UIView { func showNotification() { self = UINib(nibName: nibNamed, bundle: bundle).instantiateWithOwner(nil, options: nil)[0] as? UIView } } For anyone looking on how to initialize a xib from it's own class in swift, here is the best approach using

I'm facing a weird issue regarding sending signal 9 (SIGKILL) to the init process (PID 1). As you may know, SIGKILL can't be ignored via signal handlers. As I tried sending SIGKILL to init, I noticed that nothing was happening; init would not get terminated. Trying to figure out this behaviour, I decided to attach myself to the init process with strace too see more clearly what was happening. Now comes the weird part. If I'm "looking" at the init process with strace and send it SIGKILL, the system crashes. My question is why is this happening? Why does the system crash when I look at the

I'm trying to find the difference between init and constructor in Objective C.I'm not a C developer, but I need to convert some Objective C-code to Java and actually I can't understand the difference between both things. In Objective-C, the way an object comes to life is split into two parts: allocation and initialization . You first allocate memory for your object, which gets filled with zeros (except for some Objective-C internal stuff about which you don't need to care): myUninitializedObjectPointer = [MyClass alloc]; The next stage is initialization. This is done through a method that

Problem Override a convenience initializer of a subclass and it produces a compile error. Detail I am having issues understanding why Swift (v4.1) is not letting me override my convenience initializer. Reading the documentation I found that these two rules apply to my question: Rule 1 If your subclass doesn’t define any designated initializers, it automatically inherits all of its superclass designated initializers. Rule 2 If your subclass provides an implementation of all of its superclass designated initializers—either by inheriting them as per rule 1, or by providing a custom implementation