resources.report.rules.pmd.InefficientEmptyStringCheck.html Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of sanity4j Show documentation

Sanity4J was created to simplify running multiple static code analysis tools on the Java projects. It provides a single entry point to run all the selected tools and produce a consolidated report, which presents all findings in an easily accessible manner.

There is a newer version: 1.1.1

Show newest version



InefficientEmptyStringCheck


InefficientEmptyStringCheck
String.trim().length() is an inefficient way to check if a String is really empty, as it
creates a new String object just to check its size. Consider creating a static function that
loops through a string, checking Character.isWhitespace() on each character and returning
false if a non-whitespace character is found.
    
		
		
		    
		    
    		    
    		    
    		    

    		    This rule is defined by the following Java class:
    		    net.sourceforge.pmd.rules.strings.InefficientEmptyStringCheck
    		    
		    
	    
	    
        
        
        Example:
            
                    

public class Foo {
    void bar(String string) {
        if (string != null && string.trim().size() > 0) {
		    doSomething();
        }
    }
}