And the dashboard can distinguish between text and video highlights. The app has a few other features worth checking out, like how it shows the most popular highlights by other users on any page. This worked well for us on browsers but not on mobiles. You can highlight any part of a YouTube video, much like highlighting text on a web page. Liner also works with YouTube, which makes it stand apart. For more colors and unlimited highlights, you need the Premium package. The free basic account only lets you work with one color for the highlighter and limits you to 15 highlights per page. You can also add a comment to any highlight and share this with friends and collaborators. Annotated bibliographies can be part of a larger research. An annotation is a short summary and/or critical evaluation of a source. The annotated bibliography looks like a References page but includes an annotation after each source cited. Once you create an account and log in, you can select any text to highlight it. An annotated bibliography is a list of citations for various books, articles, and other sources on a topic. Its broad support for different platforms makes it the go-to choice if you're switching between phones, tablets, and computers but need one place to collect all your highlights. Listing 7: AnnDemo.Liner is one of the best online annotation apps and has been for years, especially with its recent updates. For example, you might want to restrict ToDo to methods only, but nothing prevents it from being used to annotate other application elements, as demonstrated in Listing 7. The title should clearly and straightforwardly describe the content of the table or figure. For example, the first table you refer to is Table 1 the fourth figure you refer to is Figure 4. However, this flexibility can be problematic. Tables and figures are each numbered separately, in the order they are referred to in your text. You can annotate types (e.g., classes), methods, local variables, and more. String cities = Using meta-annotation types - the problem of flexibility Listing 4: AnnDemo.java (version 2) public class AnnDemo Listing 4 uses ToDo to annotate an unfinished class method. Also, the final element reveals that a default return value can be specified this value is returned when an annotation doesn’t assign a value to the element. Note that each element declares no parameter(s) or throws clause, has a legal return type ( int or String), and terminates with a semicolon. Listing 3: ToDo.java (version 1) public ToDo No other type can be specified for the return type.Īs another example, Listing 3 presents a ToDo annotation type with three elements identifying a particular coding job, specifying the date when the job is to be finished, and naming the coder responsible for completing the job. The method header’s return type must be a primitive type (e.g., int),, , an enum, an annotation type, or an array of one of these types.The method header cannot provide a throws clause.The method header cannot declare parameters.However, you can supply metadata by adding elements to this type, where an element is a method header placed in the annotation type’s body.Īs well as not having code bodies, elements are subject to the following restrictions: ThreadSafe instances supply no metadata other than the annotation type name. Listing 2 offers a simple example where the main() method is annotated 2: AnnDemo.java (version 1) public class static void main(String args) Listing 1: ThreadSafe.java public ThreadSafeĪfter declaring this annotation type, prefix the methods that you consider thread-safe with instances of this type by prepending immediately followed by the type name to the method headers. For example, Listing 1 declares a simple annotation type that you might use to annotate thread-safe code. Declaring annotation types with can declare an annotation type by specifying the symbol immediately followed by the interface reserved word and an identifier. I’ll explain how to use these components as we work our way through this article. Support for annotation processing via an extension to the Java Reflection API (to be discussed in a future article), which you can use to discover a program’s runtime annotations, and a generalized tool for processing annotations.Meta-annotation types, which you can use to identify the application elements to which an annotation type applies to identify the lifetime of an annotation (an instance of an annotation type) and more.An mechanism for declaring annotation types.
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