public class Main{
public static void main(String[] argv){
String qualifiedName = "java2s.com";
System.out.println(extractName(qualifiedName));
}
/**
* Extracts the name from the given qualified reference value.
*
* <p>
* For example,
* <ul>
* <li>"style1" is extracted from "LibA.style1"
* <li>"style1" is returned from "style1"
* </ul>
*
* @param qualifiedName
* the qualified reference value
* @return the name
*/
public static String extractName(String qualifiedName) {
if (qualifiedName == null)
return null;
int pos = qualifiedName.indexOf('.');
if (pos == -1)
return qualifiedName;
return trimString(qualifiedName.substring(pos + 1));
}
/**
* Trim a string. Removes leading and trailing blanks. If the resulting
* string is empty, normalizes the string to an null string.
*
* @param value
* the string to trim
* @return the trimmed string, or null if the string is empty
*/
public static String trimString(String value) {
if (value == null)
return null;
value = value.trim();
if (value.length() == 0)
return null;
return value;
}
}
从给定的限定参考值中取名称
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