fix code

hutool-core/src/test/java/cn/hutool/core/annotation/AnnotationForTest.java

@@ -21,7 +21,7 @@ public @interface AnnotationForTest {
 	/**
 	 * 注解的默认属性值
 	 * 
-	 * @return
+	 * @return 属性值
 	 */
 	String value();
 }

hutool-core/src/test/java/cn/hutool/core/annotation/AnnotationUtilTest.java

@@ -12,7 +12,7 @@ public class AnnotationUtilTest {
 	}
 	
 	@AnnotationForTest("测试")
-	class ClassWithAnnotation{
+	static class ClassWithAnnotation{
 		
 	}
 }

hutool-core/src/test/java/cn/hutool/core/util/ClassUtilTest.java

@@ -24,7 +24,7 @@ public class ClassUtilTest {
 	}
 
 	@SuppressWarnings("unused")
-	class TestClass {
+	static class TestClass {
 		private String privateField;
 		protected String field;