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BufferedReader e PrintWriter ajuda


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boas pessoal tenho aqui uma questão

porque é que isto me dá erro?

		BufferedReader br = new BufferedReader(new FileReader("w.txt")); 
		PrintWriter pw = new PrintWriter(br);

dá me erro na parte do new PrintWriter(br); acho que tem a ver com o argumento passado ao constructor, mas como posso mudar isso?

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