At closing bell, the 225-issue Nikkei Stock Average advanced 427.66 points, or 1.55%, to 28,091.05. The broader Topix index of all First Section issues on the Tokyo Stock Exchange 21.06 points, or 1.16%, to 1,829.84.
NEC jumped 12.8%, after announcing an almost 6% increase in its nine-month operating profit.
Toilet maker Toto was up 12.4%, after raising its profit outlook on strong demand from its Chinese and U.S. markets.
Nintendo added 3.4%, on hopes for solid profits, before announcing its earnings report later Monday.
Electronic component makers Murata and TDK, meanwhile, dropped 3.3% and 4.7% respectively as their upbeat earnings had already been priced in by investors.
CURRENCY NEWS: The Japanese yen traded at 104.69 per dollar following its weakening last week from levels below 104 against the greenback.
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