History of Islam in Java

The situation of Indonesian society, especially in Java Island before the arrival of Islam, life is influenced by the caste system / distinction grade class. So the life of the community divided.
And because they belong to higher caste was not allowed to make friends with the lower castes. Castes which existed at the time it is, start supreme; 1. Brahmins, 2. Caste Knights, 3. Caste Vaishya, 4. Sudra caste.
After Islam came in, little by little castes began to disappear. According to historians, Islam arrived in the island of Java around the XI century AD. Brought by traders from Arabia and spread by the preacher from North Aceh.
The area was first visited the northern coast of East Java. And in the end developed by Maulana Malik ibrahim in Gresik.
Over time, the aggregate of the scholars who called Wali Sanga. The development of Islam in Java at that time can not be separated from the services of our guardians of Wali Sanga.