问题
I have written a simple class having an SOP statement for "Hello World". But the Eclipse console is not showing output. I then wrote the same program in a previously created project and it worked fine. I am opening the Console as given below:
Window->Show View->Console.
But it is not working. I am using j2ee project in the same workspace. Any idea? Please help. I am stuck because of this problem.
回答1:
Go to "Window > Reset Perspective", that will reset the window settings to default. Next, you might need to stop any running Java processes. I suggest you then click "Remove all Terminated Launches" and if the red "Terminate All" is still available click that as well
回答2:
Make sure that the project structure should be as follows:
回答3:
Make sure that your System.out.println("Hello World") is in main method with proper signature.
Ex:
public static void main(String[] args){
System.out.println("Hello World");
}
回答4:
[working] I encountered the same problem, I tried with all the solutions provided above but it didn't work then I came to a solution which worked. Follow the following process to overcome the problem.
Right click on workspace provided by Eclipse --> Select "Run As" --> Java Application.
This will work definitely.
回答5:
Click on Helps on the top bar. then click on Check for Updates. And update whatever updates are generated for your IDE. Helps> Check for Updates > ....
Hope it will fix your problem.
回答6:
I had the same problem just figured out the solution. Just check your main method it would be
public void main(String[] args){
just change it to this:
public static void main(String[] args){
回答7:
I had the same problem using jre7. Changed to jdk 1.7 and Eclipse console started showing outputs again.
回答8:
- Just right click on console window and click Terminate /Disconnect all.
- Run the class again
- Done !!!
回答9:
None of the above. What helped in my case:
Run > Run configurations > Common > uncheck Launch in background (last tab all the way at the bottom).
Then it showed the error why the thing wouldnt start.
In my case: a project dependency to a project which I had closed.
See (rightclick) Project > Build path > Configure build path.
来源：https://stackoverflow.com/questions/27632355/eclipse-console-not-showing-output