[Code] if (list! = null & list. Size() > 0) optimization, set empty judgment implementation method

It's old , Write high frequency , I want to change my taste …

this is it ： if(list != null && list.size() > 0) ===》 CollectionUtils.isNotEmpty(list);

if (list != null && list.size() > 0) {
    
      //TODO  Perform logical 
}
//import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
if (CollectionUtils.isNotEmpty(list)) {
    
      //TODO  Perform logical 
 }

/** * Collection Tool class  * * @author Caratacus * @since 2016-09-19 */
public class CollectionUtils {
    
    /** *  Verify that the set is empty  * * @param coll  Enter the reference  * @return boolean */
    public static boolean isEmpty(Collection<?> coll) {
    
        return (coll == null || coll.isEmpty());
    }

    /** *  Verify whether the set is not empty  * * @param coll  Enter the reference  * @return boolean */
    public static boolean isNotEmpty(Collection<?> coll) {
    
        return !isEmpty(coll);
    }
    ......
}    

By way , Elegant expression