API / Apache FreeMarker Interview questions

List the comparison operators supported in FreeMarker?

FreeMarker supports the usual equality and ordering operators, plus word aliases for the angle-bracket forms because < and > can be ambiguous inside tag syntax.

Operator	Meaning	Word alias
==	Equal to	-
!=	Not equal to	-
<	Less than	lt
>	Greater than	gt
<=	Less than or equal	lte
>=	Greater than or equal	gte

Inside an <#if> tag, writing count > 0 can confuse the parser because > looks like it might close the tag, so many style guides prefer count gt 0, or wrapping the expression in parentheses, to keep templates unambiguous.

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Why do lt, gt, lte, and gte exist alongside <, >, <=, >=?They were added for XML output formats only

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Because FreeMarker doesn't support angle-bracket operators at all

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Angle brackets can be ambiguous with tag syntax inside directives

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Because they only work on strings, not numbers

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Which operator alias means "less than or equal to"?lteq

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leq

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le

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lte

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What is the purpose of interpolation (${...}) in FreeMarker? List the comparison operators supported in FreeMarker? What are the main use cases of FreeMarker? What are the types in FreeMarker's data model? How do you use the #assign directive? Describe the built-ins available in FreeMarker? How do you access static Java members (static methods, fields, and enum constants) from a FreeMarker template? What is Apache FreeMarker? What is the purpose of the FreeMarker Configuration object? What is the difference between FreeMarker's #switch/#case and a chain of #if/#elseif directives? What is the purpose of the <#if> directive? What are the types of loops available in FreeMarker? What is the difference between #assign and #local? How do you apply default values for missing variables in FreeMarker? Why doesn't FreeMarker allow templates unrestricted access to Java reflection and side-effecting method calls? What is the purpose of the incompatible_improvements setting? Define directive in FreeMarker? Which is generally the better choice for a new project today, FreeMarker or Velocity, and why? What is a FreeMarker template? What is the purpose of the #include directive?

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