容器内部已实现锁定的并发容器 import java.util.concurrent.CopyOnWriteArrayList; CopyOnWriteArrayList<String> list=new CopyOnWriteArrayList<String>();

 public class tt {

public static void main(String[]args)
{
	CopyOnWriteArrayList<String> list=new CopyOnWriteArrayList<String>();
	
	for(int i=0;i<99;i++)
	{
		new Thread(()-> {
			
				list.add(Thread.currentThread().getName()); //不需要再添加synchronized块
				
			
		}
		).start();
	};
}
}