java字节流转换字符流 java字节转string

1、字节数组转换为字符串

byte[] byBuffer = new byte[20];
 ... ...
 String strRead = new String(byBuffer);
 strRead=String.copyValueOf(strRead.toCharArray(), 0, byBuffer.length]);

2、字符串转换成字节数组

byte[] byBuffer = new byte[200];
 String strInput="abcdefg";
 byBuffer= strInput.getBytes();