import com.sun.tools.javac.comp.Annotate.Worker; //导入依赖的package包/类
/**
 * Separate type annotations from declaration annotations and
 * determine the correct positions for type annotations.
 * This version only visits types in signatures and should be
 * called from MemberEnter.
 * The method takes the Annotate object as parameter and
 * adds an Annotate.Worker to the correct Annotate queue for
 * later processing.
 */
public void organizeTypeAnnotationsSignatures(final Env<AttrContext> env, final JCClassDecl tree) {
    annotate.afterRepeated( new Worker() {
        @Override
        public void run() {
            JavaFileObject oldSource = log.useSource(env.toplevel.sourcefile);

            try {
                new TypeAnnotationPositions(true).scan(tree);
            } finally {
                log.useSource(oldSource);
            }
        }
    } );
}
 

import com.sun.tools.javac.comp.Annotate.Worker; //导入依赖的package包/类
public void validateTypeAnnotationsSignatures(final Env<AttrContext> env, final JCClassDecl tree) {
    annotate.validate(new Worker() { //validate annotations
        @Override
        public void run() {
            JavaFileObject oldSource = log.useSource(env.toplevel.sourcefile);

            try {
                attr.validateTypeAnnotations(tree, true);
            } finally {
                log.useSource(oldSource);
            }
        }
    } );
}