CODEWITHSUNDEEP
spring
Dhirendra Kumar
Dhirendra Kumar

Reputation: 31

Why in destroy method is not called automatically in below when object will destroy?

public class Instrumentalist implements Performer, InitializingBean, DisposableBean {
 private Instrument instrument;
 private String song;
 public void setInstrument(Instrument instrument)
 {
     this.instrument=instrument;
 }

 public void setSong(String song)
 {
     this.song=song;
 }

 public void afterPropertiesSet() throws Exception
 {
     System.out.println("Before Playing Instrument");
 }

 public void destroy() throws Exception
 {
     System.out.println("After Playing Instrument");
 }

  public void perform() {
    // TODO Auto-generated method stub
    System.out.println("Playing "+ song + " : ");
    instrument.play();
   }

}

In above example only i got the out put in which afterPropertiesSet() is called but not destroy method. Below is my config.xml

<bean id="dhiraj" class="Instrumentalist">
    <property name="song" value="Sa Re Ga Ma" />
    <property name="instrument" ref="piano" />
</bean>

<bean id="piano" class="Piano" />

and i called from my main method as below - 

ApplicationContext context = new ClassPathXmlApplicationContext("Spring-config.xml");
Performer performer1=(Performer)context.getBean("dhiraj");
performer1.perform();

Upvotes: 3

Views: 5931

Answers (4)

SAN
SAN

Reputation: 107

You need to close Context Object,Then Only destroy method is called.Check for img

ConfigurableApplicationContext Context= new ClassPathXmlApplicationContext("ApplicationContext.xml");
//.............
//.........
Context.close();

**

Upvotes: 2

Karol Jędryka
Karol Jędryka

Reputation: 11

You can also register shutdown hook this way:

AbstractApplicationContext context = new ClassPathXmlApplicationContext("Spring-config.xml"); context.registerShutdownHook();

Upvotes: 1

Tomasz Nurkiewicz
Tomasz Nurkiewicz

Reputation: 340763

Try this:

AbstractApplicationContext context = new ClassPathXmlApplicationContext("Spring-config.xml");
//...
context.close();    //!!!

You have to close the context manually, otherwise Spring does not know that the bean is no longer needed and should be destroyed. Note that you have to use AbstractApplicationContext type as ApplicationContext interface does not define close().

Upvotes: 8

skaffman
skaffman

Reputation: 403501

For singleton beans like dhiraj, the destroy() lifecycle method will be called when, and only when, the application context is shut down.

If your code fragment is the entirety of your program, then destroy() will not be called because you're not closing the context properly.

Add context.close() to the end of your fragment, and you'll see destroy() being called.

Upvotes: 4

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