A JavaBeans is simply a Java class with a set of properties, each property which has a getter and/or a setter. For example if the Java class has a name property it could be defined like this.
public class Foo {
private String mName;
public String getName() { return mName; }
public void setName(String pName) { mName = pName; }
}
Typically one accesses the property by directly calling its getter and/or setter. But sometimes you may not know the name of the property in advance but still might want to access the getter and/or setter. To do this one can use Java’s beans and reflection packages.
Here is an example of how one would read the value of a property of a JavaBean. Note that the property name should not be capitalized.
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
public Object getProperty(MyBean myBean, String propertyName) {
// get descriptor of property
PropertyDescriptor descriptor = new PropertyDescriptor(propertyName, myBean.getClass());
// invoke read method on property of myBean
Method readMethod = descriptor.getReadMethod();
return readMethod.invoke(memberSavingsProfile, (Object []) null);
}
Note that if your property only has a getter then you would create the PropertyDescriptor like this.
// get descriptor of property that only has a getter
String readMethodName = "get" + org.apache.commons.lang.StringUtils.capitalize(propertyName);
String writeMethodName = null;
PropertyDescriptor descriptor = new PropertyDescriptor(propertyName, myBean.getClass(), readMethodName, writeMethodName);
