org.apache.commons.lang3.text.StrSubstitutor Example


What is org.apache.commons.lang3.text.StrSubstitutor class? How to use org.apache.commons.lang3.text.StrSubstitutor class?



org.apache.commons.lang3.text.StrSubstitutor class is a Java class offered in commons-lang3.jar that substitutes variables within a string by variable values.

Here is a simple example of org.apache.commons.lang3.text.StrSubstitutor class:

// Copyright (c) 2016
import java.util.HashMap;
import java.util.Properties;
import org.apache.commons.lang3.text.StrSubstitutor;

// Example of using the StrSubstitutor class
public class StrSubstitutorExample {
   public static void main(String[] args) throws Exception {
      // Create a StrSubstitutor with a lookup map
      HashMap map = new HashMap();
      map.put("animal", "quick brown fox");
      map.put("target", "lazy dog");
      StrSubstitutor sub = new StrSubstitutor(map);
      // Substitute an English template
      String temp = "The ${animal} jumped over the ${target}.";
      String str = sub.replace(temp);
      // Substitute a French template
      temp = "Le ${animal} par dessus le ${target}.";
      str = sub.replace(temp);
      // Create a list of properties as the lookup map
      Properties lookup = new Properties();
      lookup.setProperty("name", "John");
      lookup.setProperty("url", "");
      // Substitute a template with the list of properties
      temp = "Hi ${name}, welcome to ${url}!";
      str = StrSubstitutor.replace(temp, lookup);

You can compile and run the above example in a command window as shown below:

   -cp C:\local\commons-lang3-3.5\commons-lang3-3.5.jar

   -cp .;C:\local\commons-lang3-3.5\commons-lang3-3.5.jar

The quick brown fox jumped over the lazy dog.
Le quick brown fox par dessus le lazy dog.
Hi John, welcome to!


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2016-11-24, 2347🔥, 0💬