java - Spring Expression Language - Size property on List -

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i trying use size property on list using spring el, which's throwing exception size can't found.

@cacheable(value = "cache", unless = "#result.size > 0") public list<results> getresult();

exception:

org.springframework.expression.spel.spelevaluationexception: el1008e:(pos 8): field or property 'size' cannot found on object of type 'java.util.arraylist'         @ org.springframework.expression.spel.ast.propertyorfieldreference.readproperty(propertyorfieldreference.java:217)         @ org.springframework.expression.spel.ast.propertyorfieldreference.getvalueinternal(propertyorfieldreference.java:85)         @ org.springframework.expression.spel.ast.propertyorfieldreference.access$000(propertyorfieldreference.java:43)         @ org.springframework.expression.spel.ast.propertyorfieldreference$accessorlvalue.getvalue(propertyorfieldreference.java:346)         @ org.springframework.expression.spel.ast.compoundexpression.getvalueinternal(compoundexpression.java:84)

size resolves list#getsize() doesn't exist. try size() follows:

@cacheable(value = "cache", unless = "#result.size() > 0") public list<results> getresult();

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