How do I resolve the “java.net.BindException: Address already in use: JVM_Bind” error?

In Eclipse, I got this error: run: [java] Error creating the server socket. [java] Oct 04, 2012 5:31:38 PM cascadas.ace.AceFactory bootstrap [java] SEVERE: Failed to create world : java.net.BindException: Address already in use: JVM_Bind [java] Java Result: -1 BUILD SUCCESSFUL Total time: 10 seconds I’m not sure why it came up now, but it ran … Read more