HONG KONG (MarketWatch) -- Japanese shares soared Tuesday, pushing the Nikkei 225 Average, as investors snapped up exporters such as Toyota Motor Corp. and Canon Inc. on the yen's recent weakness. The Nikkei ended 6.3% up at 9,114.60, after dropping 5% on Friday, as trading resumed after a holiday. The broader Topix index jumped 5% to 910.70.