Fear can hold you prisoner,Hope can set you free.

获取绝对路径 [code="java"] Thread.currentThread().getContextClassLoader().getResource("").getPath(); [/code] 获取相对路径 StringBuffer 与 StringBuilder 中的方法和功能完全是等价的，只是 StringBuffer 中的方法大都采用了 synchroniz...

[code="java"] @Test public void testSerialNum() throws Exception{ final ConcurrentHashMap map = new ConcurrentHashMap(5000); Vector threads = new Vector(); Thread r = new Thread() ...