Red Cross error resolution on Target runtime JDK is not defined project

The faceted Project problem error is displayed on the markers window, as shown in figure:

At this point, the solution is as follows: Right-click on the item, select Properties-->targeted runtimes, and set the jdk1.6.0_22 to not tick.

The effect is as follows, then click OK, solve the problem, the project is not in error.

find other solutions by looking at the information:

Reference Address: http://www.myexception.cn/mobile/592366.html

Target Runtime * * * is not defined
An application hint often appears in Eclipse Errortarget runtime xxx is not defined
This does not affect the app, and finding its profile deletes the relevant configuration to resolve this error.
The relevant configuration <runtime name= "jdk1.6.0_22"/> is found in the org.eclipse.wst.common.project.facet.core.xml of the project. Setting folder.