IO相关
1、读取输入流
InputStream is = socket.getInputStream();int length = 0;byte[] buffer = new byte[1024];while(-1 !=(length = is.read(buffer, 0, buffer.length))){String str = new String(buffer,0,length);System.out.println(str);}//定义config.properties配置文件 className=java.util.ArrayList //读取配置文件,然后通过反射生成相应的类 public static void main(String[] args) throws Exception{ InputStream inStream = new FileInputStream("config.properties"); Properties props = new Properties(); props.load(inStream); String className = props.getProperty("className"); Collection collection = (Collection)Class.forName(className).newInstance(); ..... ...... } //采用ClassLoader的方式加载文件,采用这种方式加载文件只能采用绝对路径 InputStream inStream = TestReflection2.class.getClassLoader().getResourceAsStream("cn/itcast/day1/config.properties"); //同过下面这种方式装载文件,采用的是相对路径相对的是xxxx.class中xxx所在的目录。 InputStream inStream = TestReflection2.class.getResourceAsStream("config.properties"); Properties props = new Properties(); props.load(inStream); String className = props.getProperty("className"); Collection collection = (Collection)Class.forName(className).newInstance();