Best way for comparing two strings and checking for null value

Question

I have following code:

String tmpTotalCost = "";    
tmpTotalCost = request.getParameter("TotalCost");

if(tmpTotalCost == null) 
    tmpTotalCost = "";
if(tmpTotalCost == "") 
    tmpTotalCost = "0.00";

What would be the best way to check if tmpTotalCost is null or empty? I would always write a code that would finish the job, but I never thought about performance.

I'm out of votes. Someone: [Java, check whether a string is not null and not empty?](http://stackoverflow.com/questions/3598770/java-check-whether-a-string-is-not-null-and-not-empty) — Sotirios Delimanolis, Oct 14 '15 at 18:02
Or http://stackoverflow.com/questions/14721397/checking-if-a-string-is-empty-or-null-in-java — Sotirios Delimanolis, Oct 14 '15 at 18:03

score 1 · Accepted Answer · answered Oct 14 '15 at 18:04

1

I would recommend you to use StringUtils from Apache Commons Lang library. https://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/StringUtils.html

answered Oct 14 '15 at 18:04

yogidilip

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Best way for comparing two strings and checking for null value

1 Answers1