比较麻烦:InputStreamReader ir = new InputStreamReader( System.in );
BufferedReader in = new BufferedReader( ir );
String s;s = in.readLine();记得要在函数声明中声明抛出例外"throws IOException"
BufferedReader in = new BufferedReader( ir );
String s;s = in.readLine();记得要在函数声明中声明抛出例外"throws IOException"
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