Code digest

    private void travelDir(String filepath) {
        String threadName = Thread.currentThread().toString();
        logger.info("TargetDir:" + threadName + "==>" + filepath);
        File dir = new File(filepath);
        logger.info("dir.exists():" + threadName + "==>" + dir.exists());

        if (dir.exists()) {
            logger.info("dir.isDirectory():" + threadName + "==>"
                + dir.isDirectory());
            File[] files = dir.listFiles();
            for (File file : files) {
                logger.info("file.getAbsolutePath():" + threadName + "==>"
                        + file.getAbsolutePath());
            }
        }
    }

public class CalcutateTest {
    @Test
    public void testAdd() {
        Calcutate cal = new Calcutate();
        Class<Calcutate> c = Calcutate.class;// 获得class类

        try {
            Method method = c.getDeclaredMethod("add", new Class[] { int.class,
                    int.class });// 获得method.注意,这里不能使用getMethod方法,因为这个方法只能获取public修饰的方法..
            method.setAccessible(true);// 这个设置为true.可以无视java的封装..不设置这个也无法获取这个Method
            Object result = method.invoke(cal, new Object[] { 2, 10 });
            Assert.assertEquals("Must equals.",12, result);// 这里自动拆箱..
        } catch (Exception e) {
            e.printStackTrace();
        }
        
    }
}