DataInputStream的readUTF()

[javaglory]

public static void main(String[] args) throws Exception
{
byte b[]="哈哈123".getBytes();
DataInputStream dis1=new DataInputStream(new ByteArrayInputStream(b));
try
{
System.out.println(dis1.readUTF());
}
catch(EOFException ex)
{
ex.printStackTrace();
}
}


想不明白，为何老报：

java.io.EOFException
at java.io.DataInputStream.readFully(DataInputStream.java:268)
at java.io.DataInputStream.readUTF(DataInputStream.java:639)
at java.io.DataInputStream.readUTF(DataInputStream.java:610)
at net.TSocket1.main(TSocket1.java:22)

[interpb]

EOFException

EOF = End Of File

读到头了

不够长

[didoleo]

try{
byte b[]="哈哈123".getBytes();

BufferedReader in=new BufferedReader(new InputStreamReader(new ByteArrayInputStream(b),"UTF8"));
System.out.println(in.readLine() );

}catch(Exception e){

}

[interpb]

你自己看一下源代码了解一下

读取UTF的时候 具体做了 什么你就清楚了为什么抛出EOFException

[javaglory]

我看了源码了，还是不明白，唉。