?? main.java
字號(hào):
import java.io.*;
class Main {
public static void echo(Reader i, OutputStream o, int pagesize) {
try {
LineNumberReader in = new LineNumberReader(i);
PrintWriter out = new PrintWriter(o);
int lineno;
String str;
// Subtract one because readLine() already incremented line no.
while((str = in.readLine()) != null) {
lineno = in.getLineNumber();
out.println(lineno-1 + "\t" + str);
if (lineno >= pagesize) {
in.setLineNumber(0);
}
}
in.close(); // close streams
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
try {
Reader in;
if (args.length == 0)
in = new InputStreamReader(System.in);
else
in = new FileReader(args[0]);
echo(in, System.out, 10);
} catch (IOException e) {
e.printStackTrace();
}
}
}
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