develog

- Marker annotation ex) @MarkerAnnotation - Single-value annotation ex) @SingleValueAnnotation("some data") - Full annotation ex) @FullAnnotation(var1="data1", var2="data2", var3="value3")

1. 클래스 얻기 Object.getClass() UserVo vo = new UserVo(); System.out.println(vo.getClass()); .class System.out.println(UserVo.class); Class.forName("") try { System.out.println(Class.forName("vo.UserVo")); } catch (ClassNotFoundException e) { e.printStackTrace(); } 2. private field 셋팅 public class UserVo { private String name; public String getName() { return name; } } public static void main(String..

private void reflectionTest() { try { // get class Class clazz = Class.forName("vo.UserVo"); // create instance UserVo vo = (UserVo) clazz.newInstance(); // get field Field field = clazz.getDeclaredField("privateField"); // set field value field.setAccessible(true); field.set(vo, "aaaaaa"); // get field value String value = (String) field.get(vo); System.out.println(value); } catch (ClassNotFoun..

rm /tomcat/work/Catalina/도메인/_/org/apache/jsp/* ex) rm /tomcat/work/Catalina/www.mydomain.com/_/org/apache/jsp/*

Calendar cal = Calendar.getInstance();System.out.println(cal.getTimeInMillis());// 1348201513203 // 속도 더 빠름System.currentTimeMillis()// 1348201513203

interface JdbcTemplateHandler {public Object mapRow(String param, JdbcTemplateHandler handler);} class JdbcTemplate implements JdbcTemplateHandler {public Object queryForObject(String param, JdbcTemplateHandler handler) {System.out.println("query executing...");try {Thread.sleep(3000);} catch (InterruptedException e) {e.printStackTrace();}return mapRow(param, handler);}public Object mapRow(Strin..