Myeclipse is not currently available

Symptom description:

After eclipse is started, eclipse displays myeclipse is not currently available, so that none of myeclipse plug-ins can be used;

In addition, you cannot create a web project in myeclipse, but you can only create a Java project.

Cause:

When installing Oracle, the environment variables are automatically set. In the environment variables, the JRE version may be earlier than the version required by myeclipse. For example, JRE 1.4 of Oracle and jre1.5 is required by myeclipse;

Solution:

Change the environment variables in "My Computer" and place the local JRE path in front of Oracle JRE. If the JDK version is not always the same, it may be because Oracle's JRE in the environment variables can change their order before JDK's JRE!