Question 2

class H2EA
{
	int a,b;
	H2EA(int i,int j)
	{
		a=i;
		b=j;	
	}
	void inside()
	{
		System.out.println("Inside H2EA");
	}
	int Multiplication()
	{
		return a*b;
	}
}
class H2EB extends H2EA
{
	int c;
	H2EB(int i,int j,int k)
	{
		super(i,j);
		c=k;	
	}
	void inside()
	{
		System.out.println("Inside H2EB");
	}
	int Multiplication(int x)
	{
		return x*c;
	}
}
class methodOverloadingAndOverridingDifferenceH2E
{
	public static void main(String args[])
	{
		H2EB Obj = new H2EB(5,6,7);
		Obj.inside();		// Method Overriding
		System.out.println("Multiplication = "+Obj.Multiplication());		// Method Overloading
		System.out.println("Multiplication = "+Obj.Multiplication(8));	// Method Overloading	
	}
}

            

class powerExampleInJavaH2E 
{
	public static void main(String args[]) 
	{
		int x,y,mul;
		try
		{
			x = Integer.parseInt(args[0]);
			y = Integer.parseInt(args[1]);
			mul = 1;
			for(int i=0;i<y;i++)
				mul = mul*x;
			System.out.println(x+"^"+y+" : " + mul);
		}
		catch(NumberFormatException e)
		{
			System.out.println("Exception : "+e);
		}
	}	
}

// Package Example


class packageExampleImplementH2E 
{
	public static void main(String args[]) 
	{
		int x;
		help2engg.packageExampleH2E pe = new help2engg.packageExampleH2E();
		pe.show();
		pe.setMember(15);
		x = pe.getMember();
		System.out.println("Member of Inside Package : "+x);
	}
}

// The file packageExampleH2E.java must be in help2engg folder

package help2engg;

public class packageExampleH2E 
{
	String msg = "Inside Package Of Help2Engg";
	int x;
	public void show()
	{
		System.out.println("Message From Inside Package : "+msg);
	}
	public void setMember(int x)
	{
		this.x = x;
	}
	public int getMember()
	{
		return x;
	}
}

            

//interface Example


interface interfaceClass
{
	void interfaceMethod(int p);
}
class interfaceImplement implements interfaceClass
{
	public void interfaceMethod(int p1)
	{
		System.out.println("Interface Class Called with "+p1);
	}
	public void nonInterfaceMethod(int p1)
	{
		System.out.println("Interface Implement Class Called with "+p1);
	}
}
class interfaceSimpleExampleH2E
{
	public static void main(String args[])
	{
		interfaceImplement IIO = new interfaceImplement();
		IIO.interfaceMethod(15);
		IIO.nonInterfaceMethod(15);
	}
}