Classloader. findbootstrapclass (string) line: not available [native method]

Thread [main] (suincluded (exception classnotfoundexception ))
Classloader. findbootstrapclass (string) line: not available [native method]
Launcher $ extclassloader (classloader). findbootstrapclass0 (string) line: 891
Launcher $ extclassloader (classloader). loadclass (string, Boolean) line: 301
Launcher $ appclassloader (classloader). loadclass (string, Boolean) line: 299
Launcher $ appclassloader. loadclass (string, Boolean) line: 276
Launcher $ appclassloader (classloader). loadclass (string) line: 251
Launcher $ appclassloader (classloader). loadclassinternal (string) line: 319
Bootstrap. createclassloader (string, classloader) line: 166
Bootstrap. initclassloaders () line: 91
Bootstrap. INIT () line: 206
Bootstrap. Main (string []) line: 390

The error message is shown above. After checking the error information, it basically means the Tomcat problem. Possible solutions are as follows:

1.

Confirm version! Then Tomcat needs to configure JDK, not JRE.
In myeclipse, Tomcat 5.x and tomcat 6.x are different configuration options.

In myeclipse, configure the JDK used by Tomcat where Tomcat is configured in preferences.

2.

Reinstalling Tomcat is caused by the incorrect loading of Tomcat information into the registry. It may be green upstairs. Green configuration. It is easy to neglect some details. Therefore, we recommend that you install the version.

3.

After constantly re-installing and checking my‑e, I have basically confirmed that it is a problem with Tomcat, it may be because the Tomcat plug-in has not been installed (because I remembered that the Tomcat plug-in was executed during the last debug debugging, and it seems that there was a problem at the time: