如何在Eclipse for JAVA上解决此错误？

Question

Eclipse give error when I try to compile and run to JAVA codes. The error is

"The selection cannot be launched, and there are no recent launches".

How to fix this issue ??

Answer 1

your code is wrong. you need a main method to launch your program

package main;

public class main {
    public static void main (String[] args) {
        System.out.println("Test");
    }
}

Note: The name of the class always has to be the name of the file, and typically java classes start with an uppercase letter

Answer 2

I think you should run main first and describe your problem in more detail if you still have a problem.

Q: When I try to run my project by clicking the green "Play" button, I get an error of, "The Selection cannot be launched, and there are no recent launches."

A: See previous question. You must run your project's "Main" class at least once by using the right-click method described above, before the "Play button" to run a project will work.

http://courses.cs.washington.edu/courses/cse143/15wi/eclipse_tutorial/faq.shtml