libgdx Projects not working

Hello guys, I am kind of new to libgdx. I have developed some example following tutorials, and everything goes well. However, a few days ago all of my libgdx projects stop working. I can’t run my desktop launcher to test my game, even the default project does not run without any report. I tried to insert a System.out.print in the main function(at the last), and it was printed. So I guess the desktop launcher did run but just did not call the game window. Other’s java projects work well. I use eclipse to develop, and I tried Intellij which also shows nothing when I run my project. All those happened after a installed the Android Development Tools in Eclipse.(I might have set something run and i didnt notice).My system is windows10, and the opengl version is 4.4. You guys have any idea? ;D