The 225-issue Nikkei Stock Average added 284.33 points, or 1.00 percent, from Tuesday to close the day at 28,646.50.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 24.07 points, or 1.30 percent, to finish at 1,871.09.
Air transportation, real estate and transportation equipment issues comprised those that advanced the most by the close of play.
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