java code for Velocity MathTool: Maximun

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.MathTool;

public class MathToolExample {
public static void main(String[] args) throws Exception {
Velocity.init();

Template t = Velocity.getTemplate("./src/mathTool.vm");

VelocityContext ctx = new VelocityContext();
ctx.put("math", new MathTool());
ctx.put("aNumber", new Double(5.5));

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

System.out.println(writer);
}
}
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The maximum of $aNumber and 3.2 is $math.max($aNumber, "3.2")