Диаграмма классов java intellij idea

Diagrams

In the Diagrams menu, you can configure the default visibility settings and layout for diagrams.

For more information about creating diagrams, see Database diagrams.

Content pane

Select the checkboxes next to the elements to be shown on diagrams.

If this checkbox is selected, all the specified details of the elements will be shown in the UML class diagram for a revision. If this checkbox is not selected, only node elements will be included in the diagram.

Select the checkboxes to show members (fields, constructors, methods, properties and inner classes) within the node elements:

On the diagram, use toolbar buttons , , , , and .

Select the checkboxes below to show dependency links in diagram.

For the primary key columns to be shown when a diagram opens, select this checkbox.

When viewing a diagram in the editor, use on the toolbar to show or hide the corresponding columns.

For the columns other than the primary key columns to be shown when a diagram opens, select this checkbox.

When viewing a diagram in the editor, use on the toolbar to show or hide the corresponding columns.

Toggles the display of query attributes on a query map. These attributes can be a number of rows, index names, or any other additional information about the query.

If this checkbox is selected, libraries will be shown in UML diagrams for modules.

If this checkbox is selected, properties of entity classes are shown when a JPA ER diagram opens.

When viewing a diagram in the editor, you can show or hide these properties by using on the toolbar.

If this checkbox is selected, embeddable objects are shown when a JPA ER diagram opens.

When viewing a diagram in the editor, you can show or hide the embeddables by using on the toolbar.

If this checkbox is selected, superclasses of entity classes are shown when a JPA ER diagram opens.

When viewing a diagram in the editor, you can show or hide the superclasses by using on the toolbar.

For element details to be shown when a BPMN diagram opens, select this checkbox.

If this checkbox is selected, injection points are shown when a CDI dependency diagram opens.

When viewing a diagram in the editor, you can show or hide the injection points by using on the toolbar.

If this checkbox is selected, producer methods and fields are shown when a CDI dependency diagram opens.

When viewing a diagram in the editor, you can show or hide the producer methods and fields by using on the toolbar.

If this checkbox is selected, decorator bean classes are shown when a CDI dependency diagram opens.

When viewing a diagram in the editor, you can show or hide the decorators by using on the toolbar.

If this checkbox is selected, local context will be shown in diagrams. To enable showing local context in the Diagram tab in the editor, click .

If this checkbox is selected, property files will be shown in diagrams. To enable showing property files in the Diagram tab in the editor, click .

If this checkbox is selected, labels will be shown in diagrams. To enable showing labels in the Diagram tab in the editor, click .

More nodes appear in this pane depending on the installed and enabled plugins.

Controls

Select the desired layout from the Default layout list. Node elements in newly created diagrams will be arranged according to the selected layout.

Select scope from the Default scope list. Specifying a scope helps you avoid showing in diagram the unnecessary hierarchies. You can define scopes for your project in the Scopes page of the Settings ( Ctrl+Alt+S ) dialog.

If this checkbox is selected, then after applying a layout selected on the diagram context menu, all diagram elements will be resized to fit into the current diagram area. In diagram, use the toolbar button.

Do relayout when new elements were added

If this checkbox is selected, diagram layout will be performed automatically after adding new elements.

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UML class diagrams

This functionality relies on the Diagrams plugin, which is bundled and enabled in IntelliJ IDEA by default. If the relevant features aren’t available, make sure that you didn’t disable the plugin.

1. Press Ctrl+Alt+S to open the IDE settings and select Plugins .
2. Open the Installed tab, find the Diagrams plugin, and select the checkbox next to the plugin name.

IntelliJ IDEA lets you generate a diagram on a package in your project. Such diagrams always reflect the structure of actual classes and methods in your application.

View diagram on a package

1. In the Project tool window, right-click a package for which you want to create a diagram and select Diagrams | Show Diagram Ctrl+Alt+Shift+U ).
2. In the list that opens, select Java Class Diagram . IntelliJ IDEA generates a UML diagram for classes and their dependencies.

You can view your VCS local changes as a diagram. Select VCS | Uncommitted Changes| Show Local Changes as UML Ctrl+Alt+Shift+D .

Analyze class diagram

You can press Ctrl+F12 on the element to view a list of diagram elements and navigate between them.

To see the list of methods, fields, and other code elements, select the appropriate icon on the diagram toolbar located on top of the diagram editor.

The lists are displayed based on the selected visibility level, which you can change. For example, to view protected methods, click on the diagram toolbar and select protected from the list. IntelliJ IDEA displays members with visibility not less than protected, such as public, package local, and protected ones. The protected methods are displayed with modifier icons next to them.

You can click the icon to see class dependencies. IntelliJ IDEA follows the UML conventions in showing relationships between the classes.

When you click through classes in the graph, IntelliJ IDEA greys out classes that do not reside in the same package. This might be helpful, when you generate a diagram on a package that contains inner packages.

To save the diagram as a file, right-click the diagram editor and from the context menu, select Export Diagram | Export to File and then the file extension in which you want to save the diagram.

Manage class diagram

When working with diagrams, use the context menu in the diagram editor to perform different tasks. You can view members of the class, add new, delete the existing ones, see implementations, check parent classes, perform basic refactoring, add notes, and so on.

You can select the icon on the diagram toolbar to draw relationship links between elements in your graph. To delete the existing links, select the ones you don’t need and press Delete . IntelliJ IDEA will update the source code accordingly.

View the diagram structure

1. Generate a diagram.
2. Click Structure in the left toolbar. IntelliJ IDEA opens the Structure tool window that displays a map of your diagram with a small preview of the selected block and its neighbors. Use the context menu to zoom in and out, move canvas, change layout, and export part of the diagram into an image.

Add an existing class to a diagram

1. Press Space .
2. In the search field that opens, start typing a name of the class you want to add. Then, select the desired class from the suggestion list. If you want to add a class that is out of the project scope, select the Include non-project items checkbox. Alternatively, select one or more elements in the Project tool window and drag them to the diagram.

Delete a node element from the diagram

1. In the diagram editor, select a node element you want to delete.
2. Right-click the element and from the context menu, select Delete Delete . Alternatively, select Refactor | Safe Delete Alt+Delete . In this case, IntelliJ IDEA checks for usages before applying the changes.

You can quickly search for usages by pressing Alt+F7 on a code element.

Add new members to a class

You can perform some forward engineering while in the diagram editor.

1. In the diagram editor, right-click anywhere and from the context menu, select Content | New . Then select a code element you want to create.
2. Depending on your selection, IntelliJ IDEA opens the appropriate dialog where you specify the necessary information for creating the new element.

IntelliJ IDEA adds the item to your diagram as well as to your project tree .

View implementations and parent classes

You can view implementations and parent classes in your diagram. If IntelliJ IDEA finds more than one parent class or implementation, it displays a list of appropriate items. Select the one you need to see the connections between the parent and its children.

1. In the diagram editor, select an item for which you want to see implementations or parent classes.
2. Right-click the items and from the context menu, select the Show Implementations Ctrl+Alt+B or Show Parents Ctrl+Alt+P respectively.
3. In the popup that opens, select items you need and press Enter . To extend your selection up or down while in the popup, press Shift + Up or Shift + Down respectively.

Configure diagram settings

You can configure the diagram settings so that you have certain options available by default when you create a diagram.

1. Press Ctrl+Alt+S to open the IDE settings and select Tools | Diagrams .
2. In the right-hand pane, select the options that you want to see by default and click OK to apply your changes.

Analyze graph

The Analyze Graph action group lets you analyze the graph in various ways such as perform auto clusterization, measure the node centrality, search cycles, filter path between two nodes, and so on.

Filter paths between two nodes

Most of the time, generated diagrams are big and complicated. Typically, you want to concentrate only on the specific part of the diagram. IntelliJ IDEA lets you filter paths between two diagram elements.

1. In the diagram editor, select two nodes on which you want to focus and right-click one of them to open the context menu.
2. From the context menu, select Analyze Graph | Focus On Paths Between Two Nodes . If you want to focus not only on just two nodes, but on how the selected node is connected with its neighbors, select the Focus on Node Neighborhood option from the context menu.
3. In the dialog that opens, select additional options if needed and click Find . IntelliJ IDEA displays connections associated only with the selected nodes.

Measure diagram centrality

You can use this action to identify the important nodes in the graph.

1. In the diagram editor, right-click anywhere in the editor to open the context menu.
2. From the context menu, select Analyze Graph | Measure Centrality .
3. In the dialog that opens, select additional options if needed and click Measure . The node «importance» is expressed via fractional value from 0.0 to 1.0 measurement and the brightest node selection should be explored first.

Press Ctrl+Z to cancel the actions.

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Build class diagram with IntelliJ IDEA

Well, I think most Java developers faced with a necessity to see the whole picture: all classes and their relationships. At the same time IntelliJ IDEA is one of the mostly used IDE among Java developers. In practice, it’s not so easy as it might seem. Here is some guide and tips from me.

First of all, make sure UML Support plug-in is installed and enabled in your IntelliJ IDEA.

The following actions are valid for IntelliJ IDEA 2016.2.

Let’s build a diagram. To do so, click right mouse button on the root project folder or any other specific folder and then choose Diagram | Show Diagrams…

My expectation was UML diagram of classes from the whole selected folder. But it’s different – opened view contains module dependencies:

Hmmm… It’s not the one I was looking for. Let’s try obvious thing – double click on any module to go deeper and open up classes of such module. No way. I tried many different ways – no luck.

But finally I got the solution. You need to open Class Diagram view. Steps for this are similar to described above, but choose any class instead of choosing a folder. It’s better to clear the view at this step by removing all items on the diagram. Next, click right mouse button over the empty space on diagram view and choose Add Class to Diagram…

Then you can select either all classes from your project (*) or specify one or more exact modules. Include non-project classes option can be useful if you want to add classes from other projects. Choose classes using Shift or Ctrl keys (Linux and Windows) as usual.

Press F5 to make items well-arranged. That’s almost what we want.

Looks good! Here is some interesting options on the view’s tool box panel that could be useful: show/hide fields, show/hide methods and show/hide dependencies.

Perfect! That’s exactly what I needed.

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