import java.util.Properties;  
public class Test {          
	public static void main(String[] args) {          
		String s = "簡介";         
		String tt = gbEncoding(s);  //       String tt1 = "你好，我想給你說一個事情";        
		System.out.println(decodeUnicode("\\u7b80\\u4ecb"));  //       System.out.println(decodeUnicode(tt1));    
		System.out.println(HTMLDecoder.decode("中國"));       
		String s1 = "\u7b80\u4ecb";        
		System.out.println(s.indexOf("\\"));       
		}       
	public static String gbEncoding(final String gbString) {       
		char[] utfBytes = gbString.toCharArray();             
		String unicodeBytes = "";              
		for (int byteIndex = 0; byteIndex < utfBytes.length; byteIndex++) {
			String hexB = Integer.toHexString(utfBytes[byteIndex]);                     
			if (hexB.length() <= 2) {                         
				hexB = "00" + hexB;                   
				}                     
			unicodeBytes = unicodeBytes + "\\u" + hexB;                 
			}                 
		System.out.println("unicodeBytes is: " + unicodeBytes);                 
		return unicodeBytes;            }                   
	public static String decodeUnicode(final String dataStr) {              
		int start = 0;                
		int end = 0;              
		final StringBuffer buffer = new StringBuffer();                
		while (start > -1) {                   
			end = dataStr.indexOf("\\u", start + 2);                    
			String charStr = "";                    
			if (end == -1) {                        
				charStr = dataStr.substring(start + 2, dataStr.length());                   
				} else {                      
					charStr = dataStr.substring(start + 2, end);                    
					}                   
			char letter = (char) Integer.parseInt(charStr, 16); // 16進位制parse整形字串。                  
			buffer.append(new Character(letter).toString());                  
			start = end;                
			}                
		return buffer.toString();           
		}        }  
	}
	}
}