Eclipse Console not showing output

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:

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6:

I had the same problem using jre7. Changed to jdk 1.7 and Eclipse console started showing outputs again.

回答7:

1. Just right click on console window and click Terminate /Disconnect all.
2. Run the class again
3. Done !!!

回答8:

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.