37 lines
726 B
Java
Executable File
37 lines
726 B
Java
Executable File
package com.zeekling.iterator;
|
|
|
|
/**
|
|
* Created by lzh on 3/31/16.
|
|
*/
|
|
public class IteratorImp implements Iterator {
|
|
private AggregateImp aggregateImp = null;
|
|
private int size = 0;
|
|
private int index = 0;
|
|
public IteratorImp(AggregateImp aggregateImp){
|
|
this.aggregateImp = aggregateImp;
|
|
this.size = aggregateImp.getSize();
|
|
index = 0;
|
|
}
|
|
@Override
|
|
public void next() {
|
|
if(index < size){
|
|
index ++;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean isLast() {
|
|
return index>=size;
|
|
}
|
|
|
|
@Override
|
|
public void first() {
|
|
index = 0;
|
|
}
|
|
|
|
@Override
|
|
public Object current() {
|
|
return aggregateImp.getElement(index);
|
|
}
|
|
}
|