JAKARTA, Indonesia—A powerful earthquake shook parts of Indonesia’s main island of Java on Friday, damaging buildings and houses and sending people into the streets, but there were no immediate reports of casualties. Officials said there was no danger of a tsunami. The U.S. Geological Survey said the magnitude 6.6 quake was located in the Indian Ocean about 88 kilometers (54 miles) southwest of Labuan, a coastal town in Banten Province. It was centered at a depth of 37 kilometers (23 miles), it said. Dwikorita Karnawati, head of Indonesia’s Meteorology, Climatology, and Geophysical Agency, said there was no danger of a tsunami but warned of possible aftershocks. High-rises in Jakarta, the capital, swayed for more than 10 seconds, and some ordered evacuations, sending streams of people into the streets. Even two-story homes shook strongly in the satellite cities of Tangerang, Bogor, and Bekasi. Earthquakes occur frequently across the sprawling archipelago nation, …