java - generate excel sheet using Apache poi with Email Validation -


i generating excel sheet using apache poi email --that means after generating excel if user enter email in cell need validate email

below code

dvconstraint emailconstraint=null; datavalidation emaildatavalidation =null;  emailconstraint=dvconstraint.createcustomformulaconstraint("and(find("+'@'+",$a$2),find(.,$a$2),iserror(find( ,$a$2)))");---->getting error here  emaildatavalidation =datavalidationhelper.createvalidation(emailconstraint, addresslist1);        emaildatavalidation.setsuppressdropdownarrow(false);        sheet.addvalidationdata(emaildatavalidation);

when execute method getting following error

stacktrace:] root cause org.apache.poi.ss.formula.formulaparseexception: parse error near char 9 '@' in specified formula 'and(find(@,$a$2),find(.,$a$2),iserror(find( ,$a$2)))'. expected cell ref or constant literal     @ org.apache.poi.ss.formula.formulaparser.expected(formulaparser.java:188)     @ org.apache.poi.ss.formula.formulaparser.parsesimplefactor(formulaparser.java:1128)     @ org.apache.poi.ss.formula.formulaparser.percentfactor(formulaparser.java:1083)     @ org.apache.poi.ss.formula.formulaparser.powerfactor(formulaparser.java:1070)     @ org.apache.poi.ss.formula.formulaparser.term(formulaparser.java:1430)     @ org.apache.poi.ss.formula.formulaparser.additiveexpression(formulaparser.java:1530)     @ org.apache.poi.ss.formula.formulaparser.concatexpression(formulaparser.java:1514)     @ org.apache.poi.ss.formula.formulaparser.comparisonexpression(formulaparser.java:1471)     @ org.apache.poi.ss.formula.formulaparser.arguments(formulaparser.java:1056)     @ org.apache.poi.ss.formula.formulaparser.function(formulaparser.java:943)     @ org.apache.poi.ss.formula.formulaparser.parsenonrange(formulaparser.java:536)     @ org.apache.poi.ss.formula.formulaparser.parserangeable(formulaparser.java:416)     @ org.apache.poi.ss.formula.formulaparser.parserangeexpression(formulaparser.java:237)     @ org.apache.poi.ss.formula.formulaparser.parsesimplefactor(formulaparser.java:1123)     @ org.apache.poi.ss.formula.formulaparser.percentfactor(formulaparser.java:1083)     @ org.apache.poi.ss.formula.formulaparser.powerfactor(formulaparser.java:1070)     @ org.apache.poi.ss.formula.formulaparser.term(formulaparser.java:1430)     @ org.apache.poi.ss.formula.formulaparser.additiveexpression(formulaparser.java:1530)     @ org.apache.poi.ss.formula.formulaparser.concatexpression(formulaparser.java:1514)     @ org.apache.poi.ss.formula.formulaparser.comparisonexpression(formulaparser.java:1471)     @ org.apache.poi.ss.formula.formulaparser.arguments(formulaparser.java:1056)     @ org.apache.poi.ss.formula.formulaparser.function(formulaparser.java:943)     @ org.apache.poi.ss.formula.formulaparser.parsenonrange(formulaparser.java:536)     @ org.apache.poi.ss.formula.formulaparser.parserangeable(formulaparser.java:416)     @ org.apache.poi.ss.formula.formulaparser.parserangeexpression(formulaparser.java:237)     @ org.apache.poi.ss.formula.formulaparser.parsesimplefactor(formulaparser.java:1123)     @ org.apache.poi.ss.formula.formulaparser.percentfactor(formulaparser.java:1083)     @ org.apache.poi.ss.formula.formulaparser.powerfactor(formulaparser.java:1070)

i tried lot not able it.

first parameter find function string hence must quoted. find("@",.. in java can use escape string character in between formula.


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