# Java custom code for Map Reduce

### In this section

* [Java custom code for Map Reduce component](https://help.qlik.com/talend/en-US/components/7.3/java-custom-code-for-map-reduce/java-custom-code-for-map-reduce-component)
* [Java custom code for Map Reduce scenario](https://help.qlik.com/talend/en-US/components/7.3/java-custom-code-for-map-reduce/java-custom-code-for-map-reduce-scenario)