| career | drupal | java | mac | mysql | perl | scala | uml | unix  

JMeter example source code file (

This example JMeter source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - JMeter tags/keywords

abstractfunction, compoundvariable, compoundvariable, invalidvariableexception, key, list, non-nls-1, non-nls-1, override, override, random, string, string, testplan, util

The JMeter source code

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.jmeter.functions;

import java.util.Collection;
import java.util.LinkedList;
import java.util.List;

import org.apache.jmeter.engine.util.CompoundVariable;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.samplers.Sampler;
import org.apache.jmeter.threads.JMeterVariables;
import org.apache.jmeter.util.JMeterUtils;

 * Provides a Random function which returns a random long integer between a min
 * (first argument) and a max (second argument).
public class Random extends AbstractFunction {

    private static final List<String> desc = new LinkedList();

    private static final String KEY = "__Random"; //$NON-NLS-1$

    static {
        desc.add(JMeterUtils.getResString("minimum_param")); //$NON-NLS-1$
        desc.add(JMeterUtils.getResString("maximum_param")); //$NON-NLS-1$
        desc.add(JMeterUtils.getResString("function_name_paropt")); //$NON-NLS-1$

    private CompoundVariable varName, minimum, maximum;

     * No-arg constructor.
    public Random() {

    /** {@inheritDoc} */
    public synchronized String execute(SampleResult previousResult, Sampler currentSampler)
            throws InvalidVariableException {

        long min = Long.parseLong(minimum.execute().trim());
        long max = Long.parseLong(maximum.execute().trim());

        long rand = min + (long) (Math.random() * (max - min + 1));

        String randString = Long.toString(rand);

        if (varName != null) {
            JMeterVariables vars = getVariables();
            final String varTrim = varName.execute().trim();
            if (vars != null && varTrim.length() > 0){// vars will be null on TestPlan
                vars.put(varTrim, randString);

        return randString;


    /** {@inheritDoc} */
    public synchronized void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException {
        checkParameterCount(parameters, 2, 3);
        Object[] values = parameters.toArray();

        minimum = (CompoundVariable) values[0];
        maximum = (CompoundVariable) values[1];
        if (values.length>2){
            varName = (CompoundVariable) values[2];
        } else {
            varName = null;


    /** {@inheritDoc} */
    public String getReferenceKey() {
        return KEY;

    /** {@inheritDoc} */
    public List<String> getArgumentDesc() {
        return desc;


Other JMeter examples (source code examples)

Here is a short list of links related to this JMeter source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller


new blog posts


Copyright 1998-2021 Alvin Alexander,
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.