How to access things in your outer class from your inner class.

MrBear.java

package mrbear;

/**
 *
 * @author MrBear
 */
public class MrBear
{

    private String world = "The world.";

    public class FirstInner
    {

        public void printWorld()
        {
            // ambiguous
            System.out.println(world);
        }
    }

    public class SecondInner
    {

        public void printWorld()
        {
            // not ambiguous
            System.out.println(MrBear.this.world);
        }
    }
}