develog

@Override@Deprecated@SuppressWarnings @Documented@Inherited Meta Annotation (어노테이션 선언에 대한 어노테이션)@Target@Retention @Target 에서 사용 가능한 값@Type(ElementType.TYPE)@Type(ElementType.FIELD)@Type(ElementType.METHOD)@Type(ElementType.PARAMETER)@Type(ElementType.CONSTRUCTOR)@Type(ElementType.LOCAL_VARIABLE)@Type(ElementType.ANNOTATION_TYPE)@Type(ElementType.PACKAGE) // 여러 값 사용시 {} 사용@Type({ElementType.FIELD..

// Marker annotation 정의public @interface MyAnnotation { }// Marker annotation 사용@MyAnnotation // Single-value annotation 정의public @interface MyAnnotation { String value();} // Single-value annotation 사용@MyAnnotation("some data") // Full annotation 정의public @interface MyAnnotation {String name();String age();String gender();} // Full annotation 사용@MyAnnotation(name="", age="", gender="") // defau..

- 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..

build.xml