Byte conversion to Char storage in Java

// Data type conversion

The basic types in Java are all signed. The data obtained from the file reading stream is a byte array, and its central score is an ASCII value greater than 127. In this way, an error occurs when converting to the char array. solution: if the value is greater than 127 (that is, less than 0), add 256 to the value to correct the symbol bit. The sample code is as follows:

// Obtain the byte array from string
Int Len = Str. Length ();
Byte [] AB = new byte [Len];
AB = Str. getbytes ();
 
For (INT I = 0; I <Len; I ++)
{
If (AB [I] <0)
System. Out. Print (char) (AB [I] + 256 ));
Else
System. Out. Print (char) (AB [I]);
}
System. Out. println ();

 

// String. getbyte error solution:

When the string is used to store pinyin, some letters with tones are incorrectly converted. You can use the following method:

// Obtain the char array from string and convert it to the byte array
Char [] AC = new char [8];
Str. getchars (0, Len, AC, 0 );

Byte [] arrb = new byte [Len];
For (INT I = 0; I <Len; I ++)
{
Arrb [I] = (byte) AC [I];
If (arrb [I] <0)
System. Out. Print (char) (arrb [I] + 256 ));
Else
System. Out. Print (char) (arrb [I]);
}