一个基础问题大家帮忙

[hbk1984]

interface Selector
{
boolean end();
Object current();
void next();
}

public class Sequence {
private Object[] objects;
private int next=0;
public Sequence(int size)
{
objects=new Object[size];
}
public void add(Object x)
{
if(next<objects.length)
{
objects[next++]=x;
}
}
private class SSelector implements Selector
{
private int i=0;
public boolean end()
{
return i==objects.length;
}
public Object current()
{
return objects[i];
}
public void next()
{
if(i<objects.length)
{
i++;
}
}
}
public Selector getSelector()
{
return new SSelector();
}

public static void main(String[] args) {
Sequence sequence=new Sequence(10);
for(int i=0;i<10;i++)
{
sequence.add(Integer.toString(i));
}
Selector selector=sequence.getSelector();
while(!selector.end())
{
System.out.println(selector.current());
selector.next();

}
}
}
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以上程序中下列代码都代表什么意识阿，都糊涂了帮个忙大家

private Object[] objects;

public Selector getSelector()
{
return new SSelector();
}


Selector selector=sequence.getSelector();

[dracularking]

就是获取一个内部类的实例 selector

[tdy1234]

楼上正解