第一種最簡單,但沒有考慮線程安全,在多線程時可能會出問題,不過俺從沒看過出錯的現象,表鄙視我…… public class Singleton{ private static Singleton _instance = null; private Singleton(){} public stati ...
There is also a quick remedy for the emergency situation when your root partition runs out of disk space. There is a feature specific to ext3 and ext4 ...