For Each
Apache Velocity is a free, simple and powerful template engine written in 100% pure Java.
This requires the libraries velocity-1.7.jar, oro-2.0.8.jar, commons-lang-2.4.jar,
commons-collections-3.2.1.jar, commons-logging-1.1.jar, log4j-1.2.12.jar to be in classpath.
The following example shows using for-each loop in Velocity.
The variable $velocityCount gives the loop count.
01##Simple for each examples
02#foreach ($i in [0..4]) $i #end
04#foreach ($i in [-2..2]) $i #end
06#foreach ($i in [2..-2]) $i #end
08#foreach ($name in ["AAA", "BBB", "CCC", "DDD"])
09Value $velocityCount : $name
package com.bethecoder.tutorials.velocity.tests; import java.io.StringWriter; import org.apache.velocity.Template; import org.apache.velocity.VelocityContext; import org.apache.velocity.app.VelocityEngine; import org.apache.velocity.runtime.RuntimeConstants; import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader; public class ForEachTest { /** * @param args */ public static void main ( String [] args ) { /** * Initialize engine and get template */ VelocityEngine ve = new VelocityEngine () ; ve.setProperty ( RuntimeConstants.RESOURCE_LOADER, "classpath" ) ; ve.setProperty ( "classpath.resource.loader.class" , ClasspathResourceLoader. class .getName ()) ; Template template = ve.getTemplate ( "foreach.vm" ) ; /** * Prepare context data */ VelocityContext context = new VelocityContext () ; /** * Merge data and template */ StringWriter swOut = new StringWriter () ; template.merge ( context, swOut ) ; System.out.println ( swOut ) ; } }
0 1 2 3 4
-2 -1 0 1 2
2 1 0 -1 -2
Value 1 : AAA
Value 2 : BBB
Value 3 : CCC
Value 4 : DDD
