Interface Segregation Principal - Sample code

Human.java

package sample.design.Interface.segregation.bad;

/**
 * 
 * Distibution under GNU GENERAL PUBLIC LICENSE Version 2, June 1991
 * 
 * @author dmalalan
 * @created Apr 12, 2016 1:25:34 PM
 * 
 * @blog https://malalanayake.wordpress.com/
 */
public class Human implements Worker {

	public void startWork() {
		System.out.println("[START:Working Human]");
	}

	public void stopWork() {
		System.out.println("[STOP:Working Human]");
	}

	public void eat() {
		System.out.println("[EAT:Lunch Human]");
	}

}

Robot.java

package sample.design.Interface.segregation.bad;

/**
 * 
 * Distibution under GNU GENERAL PUBLIC LICENSE Version 2, June 1991
 * 
 * @author dmalalan
 * @created Apr 12, 2016 1:27:46 PM
 * 
 * @blog https://malalanayake.wordpress.com/
 */
public class Robot implements Worker {

	public void startWork() {
		System.out.println("[START:Working Robot]");
	}

	public void stopWork() {
		System.out.println("[STOP:Working Robot]");
	}

	/**
	 * The interface force to implement the method which is not needed.
	 */
	public void eat() {
		System.out.println("[NOT APPLICABLE]");
	}

}

Worker.java

package sample.design.Interface.segregation.bad;

/**
 * 
 * Distibution under GNU GENERAL PUBLIC LICENSE Version 2, June 1991
 * 
 * @author dmalalan
 * @created Apr 12, 2016 1:23:31 PM
 * 
 * @blog https://malalanayake.wordpress.com/
 */
public interface Worker {
	public void startWork();

	public void stopWork();

	public void eat();
}