jmeter-custom-function-execute.java

@Override
public String execute(SampleResult arg0, Sampler arg1) throws InvalidVariableException {

	JMeterVariables vars = getVariables();

	String str1 = ((CompoundVariable) values[0]).execute().trim();  //parameter 1
	String str2 = ((CompoundVariable) values[1]).execute().trim();  //parameter 2
	String delimiter = "";

	if(values.length>2){
		delimiter = ((CompoundVariable) values[2]).execute(); //parameter 3 - delimiter could be a space - don't trim
	}

	String result = str1 + delimiter + str2;

	//user might want the result in a variable
	if( null!=vars && values.length>3){
		String userVariable = ((CompoundVariable) values[3]).execute().trim();
		vars.put(userVariable, result);  //store the result in the user defined variable
	}

	return result;
}