Same code, but difference result in Windows & Linux ??!!!

Question

my code below:
String s1 = "&#27979;&#35797;Test";    // < ----- the s1's content include double bytes charset, e.g: Chinese
String s2 = null;
byte[] b = null;
try
b = s1.getBytes("iso-10646-ucs-2");
for (int i=0; i<b.length; i++)
System.out.print(b[i] + " ");
System.out.println();
s2 = new String(b, "iso-10646-ucs-2");
b = s2.getBytes();
for (int i=0; i<b.length; i++)
System.out.print(b[i] + " ");
System.out.println();
catch (UnsupportedEncodingException e)
e.printStackTrace();
}

Answer 1

if the String content is Englist is no problem.
but why? java is dependence on OS?Yes. When you do this:b = s2.getBytes();that converts the String s2 to bytes, using the system's default charset. And different environments have different default charsets, depending on how they are configured.
If you don't want different values, don't write code that uses default values that may vary from one system to the next.