that's really a stupid question and i'm sorry to ask here as my first question. 

at the website ,there are several different version forge, some have javadoc download  some doesn't have.

i download a forge version that have javadoc, in javadoc there are only methods without description , but in eclipse when i hang mouse on methods, there are fully description.

uhhh  i talk too much nonsense.

here is the question,how can i get javadoc with methods description? thank you very much

There are doc comments in the code itself, but Forge no longer offers a Javadoc download. You can generate one locally if you need to.

that's really helpful to me, but one little question ,when i export javadoc ,it only export the code i used,  how can i export all forge code javadoc?

I haven't found a way to generate JavaDoc for the mod and its libraries (including Forge) at the same time, but I don't really know much about the

javadoc

tool.

 

You can probably generate JavaDoc for Forge by cloning the Forge repository, checking out the appropriate branch/commit, setting up the workspace and IDE project and then using your IDE's JavaDoc generation tool.

Have you looked at the ForgeGradle Cook Book? It tells you have to make a Javadoc JAR. I have not used it before, so I don't know if it generates the Javadoc of your mod, or Forge's Javadoc.