Java-???????????
???????????? ???????[ 2014/3/27 11:03:27 ] ????????Java ???
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????2??????к??????
???????????java????????????????????????????????????似?????????????????????б??????????????
???????????顣???磺??????д?????????????????????@override?????????????????????????÷???????
??????@Deprecated????????????????????????
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?????????????????Ρ??????????????
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/**
* ??????????
* @author Administrator
*
*/
public @interface AnimTest {
}
????2????????????????????????????÷?????ж????????????????????
package com.itcast.test;
import com.itcast.zhujie.AnimTest;
@AnimTest //?????????????
public class ZhujieTest {
/**
* @param args
*/
public static void main(String[] args) {
boolean isAnim = ZhujieTest.class.isAnnotationPresent(AnimTest.class);
if(isAnim)
System.out.println("it has one");
else
System.out.println("no have");
}
}
??????????????no have ????????????????????????????????????????????????????????
??????????????????????????????????Retention??????????????????????????á?????????????????????Retention?????????????????RetentionPolicy.CLASS?????????????????????????????
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