# Building automatically

To enable automatic building:

> Select the Window > Preferences > Perform build automatically on resource modification check box.

To disable automatic building:

> Clear the Window > Preferences > Perform build automatically on resource modification check box.

Java builder
Build class path

Building a Java program
Building manually
Viewing compilation errors and warnings
Working with build paths
Adding a JAR file to the build path
Adding a library folder to the build path
Viewing and editing a project's build path

Java Build path