Question

Consider the following Java code:

String str = "\u8ba9\u4ed6\u51fa\u6d77\u4e86";
// ...
System.out.print(str);

I want to get the characters from str. Thank you in advance.

Answer 1

Take a look in this issue in Commons-IO JIRA. Hopefully the class UnicodeUnescapeReader will be integrated in commons-io in the future. Nevertheless you can integrate it in your codebase and easily use it:

String str = "\u8ba9\u4ed6\u51fa\u6d77\u4e86";
StringReader sr = new StringReader(str);
UnicodeUnescapeReader uur = new UnicodeUnescapeReader(sr);

StringBuffer buf = new StringBuffer(); 
for(int c = uur.read(); c != -1; c = uur.read())
{ 
  buf.append((char)c); 
} 
System.out.println(buf.toString());

This outputs is this: 让他出海了

Alternative with commons-io:

StringReader sr = new StringReader(str);
UnicodeUnescapeReader uur = new UnicodeUnescapeReader(sr);
System.out.println(IOUtils.toString(uur));