---
title: "Execute Function"
url: https://docs.catalyst.zoho.com/en/sdk/java/v1/serverless/functions/execute-function/
description: "This page describes the method to execute functions in your Java application with sample code snippets."
last_updated: 2025-11-19T15:07:41Z
service: Serverless
type: general
related_links:
  - name: "Execute Function - API"
    url: /en/api/code-reference/serverless/functions/execute-function/#ExecuteFunction
  - name: "Functions"
    url: /en/serverless/help/functions/introduction
---

# Execute function

The function group in Catalyst is created and defined using either the online editor or the Command Line Interface
(CLI). The function group can be executed to verify its functionality.

### Execute Function

If a function endpoint is needs to be executed, then the following code snippet can be used. Here, the function's
parameters are constructed as JSON objects and passed through the `executeFunction()` method.

The `function ID` is an auto-generated numeric long integer value.

#### Sample Code Snippet 

**Package Imports**

```java
import org.json.simple.JSONObject; 
import com.zc.functions.ZCatalystFunction;
```

```java
//Create a JSONObject For Adding Parameters 
JSONObject jsonobj = new JSONObject();
//Add Parameters as key-value pairs to pass them to the method 
jsonobj.put("Name", "Amelia"); 
//Execute the method referring the function groupId with the JSON object 
Object result = ZCatalystFunction.getInstance().getFunctionInstance(1510000000054095L).executeFunction(jsonobj);

```

> **Note:** You can also pass the function name as a string to the `getFunctionInstance()` method instead of using the function ID.