The user operation is waiting for "Building workspace" to complete

Problem description:

The user operation is waiting for "Building workspace" to complete

(This user operation is waiting for "Building workspace" (compiling the current workspace) to complete .)

When eclipse detects that multiple tasks may need to use the same resource, this potential version difference needs to be checked,Therefore, it requires that any of these potentially conflicting tasks be executed in order,

This is called "synchronization" operation. The reason is that you want to run a program, but its class may call another unfinished class. Eclipse ensures that all the related classes have been

After the program is compiled and verified, you can run the program. Therefore, wait patiently. If you are sure that there is no conflict, you can run as on the launching profile (that is, the toolbar...

In the main class or JUnit test) configuration, find "compile before running" and check it out.

Project-> properties-> builders: Remove all the options with validator, and save everything.

The user operation is waiting for "Building workspace" to complete