To be correct, the Japanese term for soft drinks other than juice (such as green tea, coffee, fruit & vegetable beverages, soda pop, and mineral water) is 清涼飲料水.
But since many Japanese beverage makers once sold such soft drinks under the name of juice (as seen in 缶ジュース/canned juice, meaning canned drink), the trace remains, and quite a few people still use the word ジュース to refer to soft drinks.