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Does anyone know of a Java library that provides support for the ${var} style substitution in text files?
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The Java Class Library (JCL) is a set of dynamically loadable libraries that Java Virtual Machine (JVM) languages can call at run time. Because the Java Platform is not dependent on a specific operating system, applications cannot rely on any of the platform-native libraries.
The Functional Java library provides the usual set of types for managing data like lists, sets, arrays, and maps. The key thing to realize is that these data types are immutable. Additionally, the library provides convenience functions to convert to and from standard Java Collections classes if needed.
What are External Libraries? External Libraries are pieces of pre-written code that is easy to implement. You don't really have to know exactly anything about what is inside that code, you just need to know how to use it.
java. library. path is a System property, which is used by Java programming language, mostly JVM, to search native libraries, required by a project.
Use org.apache.commons.lang3.text.StrSubstitutor
Example 1 (the simplest example is to use this class to replace Java System properties):
StrSubstitutor.replaceSystemProperties(
"You are running with java.version = ${java.version} and os.name = ${os.name}.");
Example 2:
Map valuesMap = HashMap();
valuesMap.put("animal", "quick brown fox");
valuesMap.put("target", "lazy dog");
String templateString = "The ${animal} jumped over the ${target}.";
StrSubstitutor sub = new StrSubstitutor(valuesMap);
String resolvedString = sub.replace(templateString);
yielding:
The quick brown fox jumped over the lazy dog.
Velocity ( http://velocity.apache.org ), FreeMarker ( https://freemarker.apache.org/ )
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