StringUtils.java

package net.java.dev.weblets.util;

/**
 * Our own StringUtils class to reduce the dependency into commons lang in the long run
 * 
 * @author Werner Punz
 * 
 */
public class StringUtils {
	public static final boolean isBlank(String in) {
		return (in == null || in.trim().equals(""));
	}
	
	public static final String getExtension(String in) {
		   int lastDot = in.lastIndexOf('.');
           if (lastDot != -1) {
               String extension = in.substring(lastDot + 1);
               return extension.trim();
           }
           return in;
	}
}