java code for Render tool: length(), toString(), toLowerCase(), toUpperCase()

import java.io.StringWriter;
import java.io.Writer;

import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.tools.generic.RenderTool;

public class RenderToolExample {

public static void main(String[] args) throws Exception {
Velocity.init();
Template t = Velocity.getTemplate("./src/renderTool.vm");

VelocityContext ctx = new VelocityContext();
ctx.put("render", new RenderTool());
ctx.put("str", new String("The One Ring"));
ctx.put("ctx", ctx);

Writer writer = new StringWriter();
t.merge(ctx, writer);

System.out.println(writer);
}
}
-------------------------------------------------------------------------------------
#set($methods = ["length()", "toString()", "toLowerCase()", "toUpperCase()"])
#set($name = '$str')

#foreach($method in $methods)
$render.eval($ctx, "${name}.$method")
#end