[SalesForce] How to check in Apex if a Text field is blank

I'm unsure what's the shortest and most robust way to check whether a Text field is blank / empty?

/*1*/ Boolean isBlank = record.txt_Field__c == '';
/*2*/ Boolean isBlank = record.txt_Field__c == null;
/*3*/ Boolean isBlank = record.txt_Field__c.trim() == '';
/*4*/ Boolean isBlank = record.txt_Field__c.size() == 0;

Best Answer

I use the isBlank(String) method on the string class in order to check whether a string is either null, white space or empty.

String.isBlank(record.txt_Field__c);

The documentation says:

Returns true if the specified String is white space, empty (''), or null; otherwise, returns false.

Related Solutions

[SalesForce] I need a String method in a Trigger to validate if a Rich Text Area is blank

You can remove all html tags (or just br if you want) and use isblank so that whitespace is not an issue.

String richtextstr = string.valueof(new_application_dependency_record.Application_Workaround__cApplication_Workaround__c);
richtextstr = richtextstr.replaceall('<.*>','');
string.isblank(richtextstr));

[SalesForce] Check lookup field is null in apex

Just compare against null directly (your first example).

Your second approach will always yield false.

Your third approach is about twice as slow as the first.

Best Answer

Related Solutions

[SalesForce] I need a String method in a Trigger to validate if a Rich Text Area is blank

[SalesForce] Check lookup field is null in apex

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