Copy2: while *1 != null)
import java.io.*;
public class Copy2 {
public static void main(String[] args) {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
try {
String line;
while *1 != null) {
System.out.println(line);
}
//以下のようにも書ける。が行が増える。
/**
String line = reader.readLine();
while (line != null) {
System.out.println(line);
line = reader.readLine();
}
*/
} catch (IOException e) {
System.out.println(e);
}
}
}
*1:line = reader.readLine(