Yes. You can create a game like Minecraft using Eclipse as your source code editor, but that's not all you'll need...

An MMORPG will require a lot of work (MMORPGs aren't known to be small projects), so you'll need a variety of tools for other aspects of the project:

• graphics editors for various graphics (e.g., logo for the game)
• 3D modeling tools (to create/modify 3D graphics)
• word processor for the planning documents (a detailed plan is highly recommended)
• word processor for writing story-lines (assuming there is at least one story-line)
• word processor for documentation (your users will want some documentation)
• web site development/maintenance tools (assuming there will be a web site)
• accounting software (if your users need to pay for anything)
• database management tools (you need to save user data and game state at the very least)

(If I've missed some important tools, please make mention of each one in a separate comment {if nobody else has} and I will probably upvote it.)

Yes. You can create a 3D game like Minecraft in Java using Eclipse as your source code editor, but that's not all you'll need...

An MMORPG will require a lot of work (MMORPGs aren't known to be small projects), so you'll need a variety of tools for other aspects of the project:

• graphics editors for various graphics (e.g., logo for the game)
• 3D modeling tools (to create/modify 3D graphics)
• word processor for the planning documents (a detailed plan is highly recommended)
• word processor for writing story-lines (assuming there is at least one story-line)
• word processor for documentation (your users will want some documentation)
• web site development/maintenance tools (assuming there will be a web site)
• accounting software (if your users need to pay for anything)
• database management tools (you need to save user data and game state at the very least)

(If I've missed some important tools: Please make mention of each tool {and its use}, each in a separate comment {if nobody else has}, and I will likely upvote it.)

Yes. You can create a game like Minecraft using Eclipse as your source code editor, but that's not all you'll need...

An MMORPG will require a lot of work (MMORPGs aren't known to be small projects), and you'll also need to use a variety of other tools for other aspects of the project:

• graphics editors for various graphics (e.g., logo for the game)
• 3D modeling tools (to create/modify 3D graphics)
• word processor for the planning documents (a detailed plan is highly recommended)
• word processor for writing story-lines (assuming there is at least one story-line)
• word processor for documentation (your users will want some documentation)
• web site development/maintenance tools (assuming there will be a web site)
• accounting software (if your users need to pay for anything)
• database management tools (you need to save user data and game state at the very least)

(If I've missed some important tools, please make mention of them in the comments.)

Yes. You can create a game like Minecraft using Eclipse as your source code editor, but that's not all you'll need...

An MMORPG will require a lot of work (MMORPGs aren't known to be small projects), so you'll need a variety of tools for other aspects of the project:

• graphics editors for various graphics (e.g., logo for the game)
• 3D modeling tools (to create/modify 3D graphics)
• word processor for the planning documents (a detailed plan is highly recommended)
• word processor for writing story-lines (assuming there is at least one story-line)
• word processor for documentation (your users will want some documentation)
• web site development/maintenance tools (assuming there will be a web site)
• accounting software (if your users need to pay for anything)
• database management tools (you need to save user data and game state at the very least)

(If I've missed some important tools, please make mention of each one in a separate comment {if nobody else has} and I will probably upvote it.)