calling non-static nested class

I have two classes under the package javaapplication9

the first class: -
package javaapplication9;

/**
 *
 * @author Administrator
 */
public class NewClass {

    /** Creates a new instance of NewClass */
    public NewClass() {
    }
     public int addn(int i)
        {
            return i + i;
        }
}
-----------------------------------------------------------------

The second class: -
package javaapplication9;

/**
 *
 * @author Administrator
 */
public class Main {

    /** Creates a new instance of Main */
    /*static Gear obj = new Gear();*/
    public Main() {
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        System.out.println("test");
        NewClass obj = new NewClass();
       System.out.println(obj.addn(8));
       Gear t =new Gear();
       t.Jam();
    }

    public /*static*/ class Gear
    {
       public void Jam()
        {
            System.out.println("Testing");
        }
    }
}
-----------------------------------------------------------------

The problem:-
I can call non-static class NewClass from main and not the non-static
class Gear
Why??
Any other solution than declaring Gear static

Thanks

Pradyut
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