The official language is Indonesian which is standardized Malay
Bahasa Indonesia
Indonesian is the official language, but there are hundreds of smaller languages that are also spoken.
the official language of Indonesia is Bahasa Indonesia
Indonesian
"Bahasa Indonesia" is one of the most-used languages in the world, and derives its roots from ancient Malay/ Malay-Polynesian languages. It has been the official language of Indonesia since 1945. Because it shares its origins Polynesian language, Bahasa Indonesia strongly resembles Bahasa Malayu, which is the official language of Asian neighbor Malaysia. As a widely-used language, Bahasa Indonesia plays an essential role in all modes of communication in the country, such as business, administration, education and media.
There is 1 main language in Indonesia. Bahasa Indonesia is the national language spoken by the Indonesians. However, there are hundreds of regional languages/dialects from all over parts of Indonesia as it is rich of ethnicities and cultures. In addition, there are also many people who speak Dutch and English due to European trade.
Bahasa Indonesia Language. ^^
Indonesian (Bahasa Indonesia) is the official language of Indonesia
Most residents of Indonesian Island speak Indonesian language added with traditional language that depends on the place. For example, the province of Sulawesi-Selatan speaks Indonesian and also Makassarnese, though some people can only speak in Makassarnese (especially elders).

For the languages of Indonesia, click here.For the languages of all of Asia (including Indonesia), click here.

Bahasa Indonesia (Indonesian), and Javanese

Here is the difference:

1. Indonesia is a country in the south pacific

2. There is no such thing as "the Indian Language" (There are about 450 Languages spoken in India and about 700 different Native American languages)

There are so many traditional dialect spoken in Indonesia (more than 400 languages). such as: Aceh, gayo, batak, minang, jawa, madura, sunda, etc.