下列程序实现从控制台输入并读取输出字符串请将程序补 import java.io.*; public class CharInput public static void main(String args)throws jav } String s; inputStreamReader ir; BufferedReader in; ir=new (System.io); in=new (ir); while ((s=in.)!=null) System.out.printin("Read;"+s); 3

import java.io.*;

public class CharInput {
public static void main(String args[]) throws IOException {
String s;
InputStreamReader ir;
BufferedReader in;
ir=new InputStreamReader(System.in);
in=new BufferedReader(ir);
while ((s=in.readLine())!=null)
System.out.println("Read: " + s);
}
}