Unknown_User

I have currently wanted to learn to code java lately and have found very good tutorials. I have also found out that I like eclipse SDK a lot for coding java. But there is one problem; I do not like to do all of the terminal commands to open and check if my java file was written correctly. I have seen people use the console on SDK before to execute their files. I would really love for someone to explain how to get this working, I have two choices when I hit run. I can choose java applet or java application. When I choose java applet if notifies me saying "Section does not contain an applet". And when I run it as an application it says "Section does not contain a main type". Someone please help me, I would really appreciate it, thanks!