動的にJavaBeanのGetter、Setterを呼び出すには、IntrospectorとBeanInfoを使ってアクセサメソッドオブジェクトを取得します。

SomeBean someBean = new SomeBean();
 
PrintStream ps = System.out;
try {
    BeanInfo beanInfo = Introspector.getBeanInfo(someBean.getClass());
    PropertyDescriptor[] pds = beanInfo.getPropertyDescriptors();
 
    for (PropertyDescriptor pd: pds) {
        String propertyName = pd.getName();
 
        Method method = pd.getReadMethod();
        if (method == null) {
            continue;
        }
 
        Object propertyValue = method.invoke(someBean, new Object[0]);
 
        ps.print(propertyName);
        ps.print("=");
        ps.println(propertyValue);
    }
 
} catch (IntrospectionException e) {
    e.printStackTrace(ps);
} catch (IllegalArgumentException e) {
    e.printStackTrace(ps);
} catch (IllegalAccessException e) {
    e.printStackTrace(ps);
} catch (InvocationTargetException e) {
    e.printStackTrace(ps);
}