MetaObject

 - XML로 read/write 가능
 - Object를 표시하는 방법은 JTable, JList 제공
 - Object 입력/수정시 각 Object 필드는 JTextField, JPasswordFiled, JTextarea, JCheckBox, ImageIcon로 매핑
 - Object를 추가/수정/삭제할 수 있는 기능를 가진 JPanel, JDialog 제공
 - Preference용 JPanel, JDialog 제공

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    public class Database implements MetaObject {
        public MetaField id = new MetaField("id", "Database Name", "", 0, false, false, MetaField.TEXT);
        public MetaField name = new MetaField("name", "Database Name", "", 10, true, true, MetaField.TEXT);
        public MetaField displayImage = new MetaField("displayImage", "Display Image", "", 20, true, false, MetaField.IMAGE);
        public MetaField url = new MetaField("url", "URL", "", 30, true, true, MetaField.TEXT);
        public MetaField driver = new MetaField("driver", "JDBC Driver", "", 20, true, true, MetaField.TEXT);
        public MetaField user = new MetaField("user", "User", "", 10, true, true, MetaField.TEXT);
        public MetaField password = new MetaField("password", "Password", "", 10, true, false, MetaField.PASSWORD);
        public MetaField description = new MetaField("description", "Description", "", 30, true, false, MetaField.TEXTAREA);

        public MetaField getKeyField() {
            return id;
        }

        public MetaField getDisplayImageField() {
            return displayImage;
        }
    }