Islam, China and Prameswara's birthplace
Prameswara is indeed a common Sanskrit name. Prameswara is also incontrovertibly Indonesian, whether he was Sumatran or Javanese  is unclear- but he was definitely born in Sumatra int the court of Sriwijaya- not as the article states, in Temasek- which would make Prameswara a fisherman's child.
Islam arrived in Indonesia from Persia, Punjab and Gujarat- not China. Zheng He was a Hamafi muslim, not a Sufi. The earliest Muslim graves in Java proper date from 1368 (Banten) -1400 in Trowulan, the capital of Majapahit in the same complex as the cenetries of the highest nobility- which indicates the highest strata of Javanese society had already began to convert, predating the Eunuch Turkoman Hamafi Zheng He. Thus the ludicrous argument CHinese as part of the Wali Songo brought Islam to Java is disproved by archeological evidence.

You will also note- the Javanese repelled the Mongols- the only other Asians to successfully do so were the Japanese. Zheng He's navy was a navy for prestige and tribute- not a military navy. The Javanese under Singhasari later Majapahit also repelled the Siamese, and the Negerakertagama epoic already indicates there was Muslim activity or unrest in pre-Zheng He Java. I have not read of any Zheng HE military campaign. 
I direct  you to Rickleff's History of Java. Save the lame original research for UCLA Berkely and the Discovery Channel Hour Asia series.