小编Z.I*_*I.J的帖子

我有两个不同的用户定义对象包....

1) ws.lender.dto (all Objects exists in this package are source side).
2) copl.com.dto (all Objects exists in this package are destination side).

对象层次结构和对象名称在两侧都不同.我想通过字段或通过使用Reflection的getter和setter将源端对象复制到目标端对象字段.

例如

源端对象

   package ws.lender.dto;

    @XmlAccessorType(XmlAccessType.FIELD)
    @XmlType(name = "CustomerAddresses", propOrder = {
        "previousAddresses"
    })
    public class CustomerAddresses {

        protected PreviousAddresses previousAddresses;

        public PreviousAddresses getPreviousAddresses() {
            return previousAddresses;
        }

        public void setPreviousAddresses(PreviousAddresses value) {
            this.previousAddresses = value;
        }

    }


@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "PreviousAddresses", propOrder = {
    "previousAddress"
})
public class PreviousAddresses {

    @XmlElement(name = "PreviousAddress", required = true) …

根据我对Java的一些书籍的理解,接口不能扩展类.

但是所有接口都从Object类继承方法.为什么会这样？

如果Interface不从Object类扩展.那么这段代码是如何工作的呢？

interface A
{    
 public boolean equals(Object o);

}

class InterfaceAndObjectClass
{

    public static void main(String[] args)
    {
        A a = null;

        a.equals(null);

        a.hashCode();

        a.toString();
    }
}

请帮我解释如何访问Interface中的Object类方法.