永远地跑

Question

我正在为一个类的项目工作，我们将把我们从书中倾斜的代码放在一起组成一个循环队列（在这个项目中称为环形缓冲区），经过几个小时的阅读/修复错误并将所有内容放在一起我结束了这个：

import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Scanner;
import java.io.BufferedInputStream;
import java.io.PrintWriter;
import java.io.OutputStreamWriter;

public class RingBuffer<Item> implements Iterable<Item>
{
private int maxSize,size,first,last;
private Item[] buffer;

public RingBuffer(int maxSize)
{
    this.maxSize=maxSize;
    buffer=(Item[])new Object[maxSize];
}

public boolean isEmpty(){return size==0;}

public boolean isFull(){return size==maxSize;}

public void enqueue(Item item)
{
    if(isFull())
        throw new RuntimeException("The buffer is full");
    buffer[last]=item;
    last++;
    if(last==maxSize)
        last=0;
    size++;
}

public Item dequeue()
{
    if(isEmpty())
        throw new RuntimeException("The buffer is empty");
    Item item=buffer[first];
    first++;
    if(first==maxSize)
        first=0;
    size--;
    return item;
}

public Iterator<Item> iterator()
{
    return new RingBufferIterator();
}

public class RingBufferIterator implements Iterator<Item>
{
    private int current;
    private boolean iterated;
    public RingBufferIterator()
    {
        current=first;
    }

    public boolean hasNext()
    {
        if(iterated)
            return current!=last;
        return true;
    }

    public Item next()
    {
        if(!hasNext())
            throw new NoSuchElementException();
        Item result=buffer[current];
        current++;
        if(current==maxSize)
            current=0;
        iterated=true;
        return result;
    }

    public void remove()
    {
        throw new UnsupportedOperationException();
    }
}

public static void main(String[] args)
{
    Scanner input=new Scanner(new BufferedInputStream(System.in));
    PrintWriter output=new PrintWriter(new OutputStreamWriter(System.out),true);

    RingBuffer<String> ring=new RingBuffer<String>(5);

    while(input.hasNext())
    {
        String item=input.next();
        if(!item.equals("-"))
            ring.enqueue(item);
        else if(!ring.isEmpty())
            output.print(ring.dequeue()+" ");
    }
    output.println();
    for(String st:ring)
        output.print(st+" ");

    output.println();
}
} 

没有错误，但是我们获得了为分配运行的args，我在netbeans的运行设置中添加了。大约一个半小时前我按下了它，它仍在运行。我之前从未遇到过像cs学生那样的问题，并且想知道是什么原因造成的。在编码中是否需要更改任何内容，或者某些代码需要花费很长时间才能运行，我应该等待它吗？提前致谢