public class Main {
  public static void main(String[] args)  
  {  
      System.out.println(replaceVars("$myvar"));  
  }  
 
  public static String replaceVars(String source)  
  {  
      String[][] varNames = new String[][]{new String[]{"myvar", "This is a variable"},
                                           new String[]{"anothervar", "This is another variable"},
                                          new String[]{"yetanothervar", "This is yet another variable"}};  
      String result = source;  
      System.out.println(result);
      for(String[] s : varNames) {
        result = result.replace("$" + s[0], s[1]);
        System.out.println(s[0]);
        System.out.println(s[1]);
        System.out.println(result);
      }
      System.out.println(result);
      return result;  
  }
}

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