As JB Nizet wrote, there is no special node for Java (but you can create one). If you want to create your own custom template for Java, follow these steps:
Open the settings window (File → Settings)
Click Editor → Live Templates
Select the template group to which you want to add your live template (you can create your own template group if you want)
Click the + icon and select Live Template
Indicate the text of the abbreviation, description and template.
Remember to define the context (in your case Java)
Example
Here is an example of how to create your own TODO text
Open the settings window using the Live Templates editor (as described above).
Click the + icon and select "Template Group."
Name this Java group.

Click the + icon again and select Live Template.
Indicate your Live Template and DEFINE CONTEXT .

In my case, writing mtodo and pressing enter will result in:
// TODO myName
You can even use variables. Write in the text of the template, for example. $ DATE $ and $ TIME $
// TODO myName $DATE$ $TIME$
Click the "Change Variables" button and assign each variable (defined by the dollar sign) and expression (predefined function).

Now mtodo will lead to
// TODO myName 13.10.2015 15:39
Here you can find the predefined functions here . An example was created using IntelliJ IDEA 15 EAP.
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