The method of calculating string length in Java and the understanding of u4E00 and u9FBB

When strings are encoded in unicode, the string length calculation method finds out the range of Chinese characters represented in unicode encoding from "\u4E00" to "\u9FBB". Since a Chinese character represents two characters, the following method can be used to calculate the length of strings

 
public static int getCharLength(String content) { 
int count = 0; 
for (int i = 0, len = content.length(); i < len; ++i) { 
if ('u4E00' <= content.charAt(i) && 'u9FBB' >= content.charAt(i)) { 
count++; 
} 
} 
return content.length()+count; 
} 

Other coding methods can be calculated according to this principle