Java by API/java.beans/BeanInfo

BeanInfo: getEventSetDescriptors()

  
import java.beans.BeanInfo;
import java.beans.EventSetDescriptor;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
public class Main {
  public static void main(String args[]) {
    try {
      Class c = Class.forName("Colors");
      BeanInfo beanInfo = Introspector.getBeanInfo(c);
      System.out.println("Properties:");
      PropertyDescriptor propertyDescriptor[] = beanInfo.getPropertyDescriptors();
      for (int i = 0; i < propertyDescriptor.length; i++) {
        System.out.println("\t" + propertyDescriptor[i].getName());
      }
      System.out.println("Events:");
      EventSetDescriptor eventSetDescriptor[] = beanInfo.getEventSetDescriptors();
      for (int i = 0; i < eventSetDescriptor.length; i++) {
        System.out.println("\t" + eventSetDescriptor[i].getName());
      }
    } catch (Exception e) {
      System.out.println("Exception caught. " + e);
    }
  }
}

BeanInfo: getPropertyDescriptors()

  
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
public class Main {
  public static void main(String[] argv) throws Exception {
    BeanInfo bi = Introspector.getBeanInfo(MyBean.class);
    PropertyDescriptor[] pds = bi.getPropertyDescriptors();
    for (int i = 0; i < pds.length; i++) {
      String propName = pds[i].getDisplayName();
      System.out.println(propName);
    }
  }
}
class MyBean {
  public String getProp1() {
    return null;
  }
  public void setProp1(String s) {
  }
  public int getProp2() {
    return 0;
  }
  public void setProp2(int i) {
  }
  public byte[] getPROP3() {
    return null;
  }
  public void setPROP3(byte[] bytes) {
  }
}