Java开发网 - 这里有什么错误？(System.in.read();)

Topic: 这里有什么错误？(System.in.read();)

1.这里有什么错误？(System.in.read();)	Copy to clipboard
Posted by: zhuenhui Posted on: 2005-08-13 15:47 import java.io.*; public class rabbit{ public static void main(String args[]) { String n = System.in.read(); System.out.println(n); } }

2.Re:这里有什么错误？ [Re: zhuenhui]	Copy to clipboard
Posted by: zhuenhui Posted on: 2005-08-13 15:48 Post is deleted

3.Re:这里有什么错误？ [Re: zhuenhui]

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Posted by: bluepure
Posted on: 2005-08-13 16:09

//String n = System.in.read();

这还用得着问吗??

int n = System.in.read();

//关于read方法 public abstract int read() throws IOException;

要想读字符串,应该这样写:


    try {
      BufferedReader bf = new BufferedReader(new
                                             InputStreamReader(System.in));
      String n = bf.readLine();
system.out.println;
    }
    catch (IOException ex) {
      ex.printStackTrace();
    }

4.Re:这里有什么错误？ [Re: zhuenhui]	Copy to clipboard
Posted by: zhangp_happy Posted on: 2005-08-17 23:33 方法read()要 throws 出IOException！

5.Re:这里有什么错误？ [Re: zhuenhui]	Copy to clipboard
Posted by: brianlove Posted on: 2005-08-22 02:24 使用System.in.read()方法必须要抛出异常，而且用于接收的变量类型不是String,应该用int类型，再用（char）转换进行输出就行了