Excersise : 2 Use Overload i) Method ii) Constructor | Java Program | Tamizhan Goals

Excersise : 2

    Use Overload i) Method ii) Constructor

Program : Method Overloading

import java.io.*;
import java.lang.*;
import java.math.*;
class Methov
{
	int area(int a)
	{
		return a*a;
	}
	float area(float l,float b)
	{
		return l*b;
	}
	double area(double sa,double sb,double sc)
	{
		double s,ta;
		s=(sa+sb+sc)/2;
		ta=Math.sqrt(s*(s-sa)*(s-sb)*(s-sc));
		return ta;
	}
}
class Area
{
	public static void main(String arg[])
	{
		Methov mo=new Methov();
		DataInputStream din=new DataInputStream(System.in);
	try
		{
			int s1,sar;
			System.out.println("Enter the side value:");
			s1=Integer.parseInt(din.readLine());
			sar=mo.area(s1);
			System.out.println("Area of the Square:"+sar);
			float l1,b1,ra;
			System.out.println("Enter the Value of length and breadth:");
			l1=Float.parseFloat(din.readLine());
			b1=Float.parseFloat(din.readLine());
			ra=mo.area(l1,b1);
			System.out.println("Area of the Rectangle:"+ra);
			double sa1,sb1,sc1,ta1;
			System.out.println("Enter the value of side 1:");
			sa1=Double.parseDouble(din.readLine());
			System.out.println("Enter the value of side 2:");
			sb1=Double.parseDouble(din.readLine());
			System.out.println("Enter the value of side 3:");
			sc1=Double.parseDouble(din.readLine());
			ta1=mo.area(sa1,sb1,sc1);
			System.out.println("Area of the Triangle:"+ta1);
			}
			catch(Exception e)
			{
				System.out.println("Input Error");
			}
		}
	}

Output

Program : Constructor Overloading

    import java.io.*;
	import java.lang.*;
	import java.math.*;
	class Conov
	{
		int side;
		float length,breadth;
		double side1,side2,side3;
	Conov()
	                {
	                   side=0;
	                   length=0;
	                   breadth=0;
	                   side1=0.0;
	                   side2=0.0;
                    	side3=0.0;
                    	}
	Conov(int a)
	        {
	         side=a;
	        }
	Conov(float l,float b)
	       {
	        length=l;
	        breadth=b;
	        }
	Conov(double x,double y,double z)
                           {
	          side1=x;
	          side2=y;
	          side3=z;
	         }
	void sarea()
                            {
                              int sa=side*side;
	           System.out.println("Area of the Square="+sa);
                             }                 
	void rarea()
                            {
                              float ra=length*breadth;
                               System.out.println("Area of the rectangle="+ra);
                             }
                   void tarea()
                             {
                              double s,ta;
                               s=(side1+side2+side3)/2;
                               ta=Math.sqrt(s*(s-side1)*(s-side2)*(s-side3));
                              System.out.println("Area of the triangle="+ta);
                               }
                 }
class Su1
            {
               public static void main(String args[])
                        {
	      Conov co1,co2,co3,co4;
                          co1=new Conov();
                          DataInputStream din;
                           din=new DataInputStream(System.in);
                         try
                                {
                                    int s;
                                              System.out.println("Enter the value of side:");
                                              s=Integer.parseInt(din.readLine());
                                              co2=new Conov(s);
                                              co2.sarea();
                                   float l1,b1;
                                              System.out.println("Enter the value of length:");
                                              l1=Float.parseFloat(din.readLine());
                                              System.out.println("Enter the value of breadth:");
                                              b1=Float.parseFloat(din.readLine());
                                              co3=new Conov(l1,b1);
                                              co3.rarea();
                                   double x1,y1,z1;
                                               System.out.println("Enter the value of side1:");
                                                x1=Double.parseDouble(din.readLine());
                                                System.out.println("Enter the value of side2:");
                                                y1=Double.parseDouble(din.readLine());
                                                System.out.println("Enter the value of side3:");
                                                z1= Double.parseDouble(din.readLine());
                                                 co4=new Conov(x1,y1,z1);
                                                 co4.tarea();
                                     }
                  catch(Exception e)
                                    {
                                       System.out.println("Input Error");
                                    }
                }
  }                

Output