import java.io.File;
public class GetFileName {
/**
*author: yinxian
*/
public static void main(String[] args) {
System.out.println(getFileNameExtension(fileString));
}
/**
* 获取后缀名称
* @param filePath
* @return
*/
String getFileNameExtension(String filePath){
File file = new File(filePath);
String fileName = file.getName();
String suffix = fileName.substring(fileName.lastIndexOf(".") + 1);
return suffix;
}
}