题目内容

标准输入输出流都是System类的静态方法

A. 对
B. 错

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阅读下面的程序,分析代码是否能够编译通过,如果能编译通过,请列出运行的结果。否则请说明编译失败的原因。import java.io.*;public class Example01 { public static void main(String[] args) throws Exception {FileInputStream in = new FileInputStream("src.txt");InputStreamReader isr = new InputStreamReader(in);BufferedReader br = new BufferedReader(isr);FileOutputStream out = new FileOutputStream("des.txt");OutputStreamWriter osw = new OutputStreamWriter(out);BufferedWriter bw = new BufferedWriter(osw);String line; while ((line = br.readLine()) != null) {bw.write(line);}br.close();bw.close(); }}

IO流被分为字节流、字符流两大流类,两者有什么区别?

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目前,IP地址在广泛使用的版本有( )

A. IPv4
B. IPv16
C. IPv6
D. IPv8