StringTemplate is a java template engine (with ports for C#, Objective-C, JavaScript, Scala) for generating source code, web pages, emails, or any other formatted text output. StringTemplate is particularly good at code generators, multiple site skins, and internationalization / localization.

January 20, 2026 - Evaluation of a template expression first produces an instance of StringTemplatePREVIEW, representing the right hand side of the template expression, and then passes the instance to the template processor given by the template expression. For example, the following code contains a template expression that uses the template processor RAW, which simply yields the StringTemplatePREVIEW passed to it:

July 7, 2025 - StringTemplate str = RAW .

January 16, 2025 - The method StringTemplate::fragments returns a list of fragment literals, which are the character sequences preceding each of the embedded expressions, plus the character sequence following the last embedded expression. In this example, the first and last fragment literals are zero-length strings because an embedded expression appears at the beginning and end of the template.

StringTemplate is extremely simple to use and assumes no special relationship with a web server or "engine." Further, it does not assume anything about the structure of the template text. The template can be for HTML, XML, Java, SQL, or whatever. For example, here is a trivial example that I actually use for generating SQL

January 9, 2024 - TemplateArgument TemplateProcessor: Expression TemplateArgument: Template StringLiteral TextBlock Template: StringTemplate TextBlockTemplate StringTemplate: Resembles a StringLiteral but has one or more embedded expressions TextBlockTemplate: Resembles a TextBlock but has one or more embedded expressions · The Java compiler scans the term "..." and determines whether to parse it as a StringLiteral or a StringTemplate based on the presence of embedded expressions.

The Evolution of the StringTemplate Engine Terence Parr Wed Dec 15, 2004 13:00 Slides from my presentation at UC Berkeley's Harmonia group Generating Java and XML Using StringTemplate Terence Parr Wed Aug 18, 2004 10:00 This small article demonstrates how a Java program may dump out its own field/method interface as Java text using reflection and then generate the interface in XML--all without changing the generation logic.

import org.stringtemplate.v4.*; public class Hello { public static void main(String[] args) { ST hello = new ST("Hello, <name>"); hello.add("name", "World"); System.out.println(hello.render()); } } Here's how to compile and run it from the command ...

For example, in a deeply nested template for an HTML page body, we could still reference the title attribute defined in the outermost page template. To use templates, you create one (usually via STGroup) and then inject attributes using add(java.lang.String, java.lang.Object).

November 27, 2023 - As I mentioned in the previous section, when you create a String by merging string literals and variables, the String literals and variable values are stored as List of String and Object (defined in the interface StringTemplate). To create the final String, you need to add one each from these Lists in an alternate manner. Before adding the value, handle the issue. For example, in the preceding code snippet, I replace every occurrence of “↓” with “(Precipitation)”.

June 19, 2024 - For example, here’s an example where we create a processor to directly return the JSON object from the string without going through an extra step of conversion. /* Define the Template Processor */ class JsonTemplateProcessor implements ...

June 20, 2023 - The main advantage of Java’s implementation over other languages in my opinion is the possibility of using another template processor than a String -> String one. Look at the JSON example, again. Wouldn’t it be nicer if the interpolation could return a JSONObject and not a String? So let’s do that! Template processing is built upon the newly added nested functional interface java.lang.StringTemplate.Processor:

August 14, 2023 - TemplateArgument TemplateProcessor: Expression TemplateArgument: Template StringLiteral TextBlock Template: StringTemplate TextBlockTemplate StringTemplate: Resembles a StringLiteral but has one or more embedded expressions TextBlockTemplate: Resembles a TextBlock but has one or more embedded expressions · The Java compiler scans the term "..." and determines whether to parse it as a StringLiteral or a StringTemplate based on the presence of embedded expressions.

It is designed to be embedded inside other applications and is distributed as a small library with no external dependencies except ANTLR (used for parsing the StringTemplate template language) and, the standard platform libraries (e.g. JDK 1.2 for the Java version).

July 30, 2024 - String name = "Lokesh"; //STR String message = STR."Greetings \{name}."; //FMT String message = STR."Greetings %-12s\{name}."; //RAW StringTemplate st = RAW."Greetings \{name}."; String message = STR.process(st); Somehow, FMT and RAW seems not working in the latest JDK version as of today. May be a later JDK update will fix this issue. Now let us go through some important concepts that we must know when writing the new template strings. A template processor is part of the language itself. It is a ‘public static final‘ field that is automatically imported into every Java source file so we can it directly.

December 21, 2023 - String first = "John"; String last = "Smith"; StringTemplate st = RAW. "My first name is \{ first } and my last name is \{ last }" ; ... fragments, which is [“My first name is” , “and my last name is” , “”] in the template above, ...

ST (StringTemplate) is a java template engine (with ports for C#, Python, and Objective-C coming) for generating source code, web pages, emails, or any other formatted text output.

September 17, 2021 - TemplateArgument TemplateProcessor: Expression TemplateArgument: Template StringLiteral TextBlock Template: StringTemplate TextBlockTemplate StringTemplate: Resembles a StringLiteral but has one or more embedded expressions, and can be spread over multiple lines of source code TextBlockTemplate: Resembles a TextBlock but has one or more embedded expressions · The Java compiler scans the term "..." and determines whether to parse it as a StringLiteral or a StringTemplate based on the presence of embedded expressions.

Evaluation of a template expression first produces an instance of StringTemplatePREVIEW, representing the right hand side of the template expression, and then passes the instance to the template processor given by the template expression. For example, the following code contains a template expression that uses the template processor RAW, which simply yields the StringTemplatePREVIEW passed to it: