Java converts a valid length in byte to a string instance code _java

In general, we use byte to receive read data, if the data does not reach the byte defined size, we will directly convert byte to string will appear garbled case, in this case should be based on the return value of read to convert byte, otherwise will produce garbled case,

The following is a simple example:

Package com.javaio.myinputstream; 
 
public class MyConsole {public 
  static void Main (String argv[]) throws Exception { 
    System.out.println ("Please INP UT something: "); 
    Byte[] B = new byte[1024]; 
    int len = System.in.read (b); 
    System.out.println ("You are:" + new String (b, 0, Len, "UTF-8")); 
  } 
 

Output results

Please input something: 
asdfasdf 

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