Java注释ElementType常量是什么意思？

总结了主要内容：

@CustomTypeAnnotationpublic class MyAnnotatedClass {  @CustomFieldAnnotation  private String foo;  @CustomConstructorAnnotation  public MyAnnotatedClass() {  }  @CustomMethodAnnotation  public String bar(@CustomParameterAnnotation String str) {    @CustomLocalVariableAnnotation String asdf = "asdf";    return asdf + str;  }}

ANNOTATION_TYPE是另一个注释上的注释，如下所示：

@CustomAnnotationTypeAnnotationpublic @interface SomeAnnotation {  ..}

包是在包中的

package-info.java

@CustomPackageLevelAnnotationpackage com.some.package;import com.some.package.annotation.PackageLevelAnnotation;