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JAVA annotationÈëÃÅ

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Ò». ×î³£¼ûµÄannotation
@Override:ÓÃÔÚ·½·¨Ö®ÉÏ£¬ÓÃÀ´¸æËß±ðÈËÕâÒ»¸ö·½·¨ÊǸÄд¸¸ÀàµÄ
@Deprecated:½¨Òé±ðÈ˲»ÒªÊ¹ÓþɵÄAPIµÄʱºòÓõÄ,±àÒëµÄʱºò»áÓòúÉú¾¯¸æÐÅÏ¢,¿ÉÒÔÉ趨ÔÚ³ÌÐòÀïµÄËùÓеÄÔªËØÉÏ.
@SuppressWarnings:ÔÝʱ°ÑһЩ¾¯¸æÐÅÏ¢ÏûÏ¢¹Ø±Õ
@Entity:±íʾ¸ÃÀàÊǿɳ־û¯µÄÀà
 
¶þ. Éè¼ÆÒ»¸ö×Ô¼ºµÄAnnotation
      ÏÈ¿´´úÂëÔÙ½²»°
1. Ö»ÓÐÒ»¸ö²ÎÊýµÄAnnotationʵÏÖ
 
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package chb.test.annotation;  
import java.lang.annotation.Documented;  
import java.lang.annotation.ElementType;  
import java.lang.annotation.Retention;  
import java.lang.annotation.RetentionPolicy;  
import java.lang.annotation.Target;  
@Target(ElementType.TYPE)  
@Retention(RetentionPolicy.RUNTIME)  
@Documented 
public @interface MyAnnotation1 {  
        String value();  

package chb.test.annotation;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface MyAnnotation1 {
        String value();
}
 
2. ÓÐÁ½¸ö²ÎÊýµÄAnnotationʵÏÖ
 
view plaincopy to clipboardprint?
package chb.test.annotation;  
import java.lang.annotation.Documented;  
import java.lang.annotation.ElementType;  
import java.lang.annotation.Retention;  
import java.lang.annotation.RetentionPolicy;  
import java.lang.annotation.Target;  
@Target(ElementType.METHOD)  
@Retention(RetentionPolicy.RUNTIME)  
@Documented 
public @interface MyAnnotation2 {&


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