java通过interface实现C中的函数指针

//以顺序表中的对每个元素的访问为例

//接口
public interface CallBackEvent {
public int visit(DsList list);
}

//顺序表类
public class SqList(){
public int listTraverse(CallBackEvent callBack) {
callBack.visit(this);
return 1;
}
}

//测试类
public class Test{
public static void main(String [] args)
{
SqList list=new SqList();

list.listTraverse(new CallBackEvent() {

@Override
public int visit(DsList list) {
if(list==null)
return 0;
else
{
for(int i=0;i<list.listLength();i++)
System.out.println("name:"+list.getElem(i).name);
return 1;
}
}
});