BeanContext Child Support : Java Beans « Language Basics « Java
BeanContext Child Support
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import java.beans.beancontext.BeanContextChildSupport;
import java.beans.beancontext.BeanContextSupport;
/**
* Test program that adds 100 beans to a context, and calls size() to report the
* number of beans currently nested. Finally, this test calls toArray() to get
* references to all child beans.
*/
public class Example2 {
public static void main(String[] args) {
// A BeanContext
BeanContextSupport context = new BeanContextSupport();
// Many JavaBeans
BeanContextChildSupport[] beans = new BeanContextChildSupport[100];
System.out.println("Number of children in the context: " + context.size());
// Create the beans and add them to the context
for (int i = 0; i < beans.length; i++) {
beans[i] = new BeanContextSupport();
context.add(beans[i]);
}
System.out.println("Number of children in the context: " + context.size());
// Context now has 100 beans in it, get references to them all
Object[] children = context.toArray();
System.out.println("Number of objects retrieved from the context: "
+ children.length);
}
}
