How can I add JavaDoc or other document to netbeans ?
I try with this way :

Tools >> Java Platform >> JavaDoc Tab >> JavaDoc.zip (in my desktop)

but in editor when I press Ctrl+Space in tooltiptext this message shown :

Javadoc not found. Either Javadoc documentation for this item does not exist or you have not added specified Javadoc in the Java Platform Manager or the Library Manager.

I tried restarting NetBeans but this was the result:

enter image description here

java netbeans javadoc document
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