java swing component cannot be resolved

Question

I took the following code from a tutorial:

import javax.swing.*;
import java.util.Date;

public class SwingGUI {

    public static void main( String[] args          


        

Answer 1

1. There must be an installed (and selected) JDK in Eclipse:

   Window > Preferences > Java > Installed JREs

2. The project must be configured to use that JDK:

   Project > Properties > Java Build Path > Libraries

3. there should be an entry like "JRE System Library [JDK7]" in the list. If not press:

   Add Library... > JRE System Library

4. The project should have been created as a "Java Project":

   Project > Properties > Builders

   should include "Java Builder"

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