mystack.java

strus shsajskfdgdfwqesqweqwe

package day20;

import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class MyStack {
	private Object[] data;
	private int count;
	private Lock lock;
	
	public MyStack(int size){
		data=new Object[size];
		count=0;
		lock=new ReentrantLock();
	}
	
	public void push(Object obj){
		lock.lock();
		try{
			if(count==data.length){
				throw new FullStackException("栈空间已满!");
			}
			data[count]=obj;
			for(int i=0;i<1000000;i++);
			count++;
		}
		finally{
			lock.unlock();
		}

	}
	
	public String toString(){
		StringBuffer sb=new StringBuffer();
		for(int i=0;i<count;i++){
			sb.append(data[i]+",");
		}
		return sb.toString();
	}

}