The 225-issue Nikkei Stock Average added 724.83 points, or 3.88 percent, from Thursday to close the day at 19,389.43.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 60.17 points, or 4.30 percent, to finish at 1,459.49.
Precision instrument, electric power and gas and pharmaceutical issues comprised those that gained the most by the close of play.
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