Object Oriented Programming using Java Questions and Answers – Member Functions

class Function
{
  void Print() 
  {
        System.out.println("Hello World!");
  }
  public static void main(String[] args) 
  {
        Function obj=new Function();
        obj.Print();
  }
}

class TestCase 
{
    public static void main(String[] args) 
    {
        Function();
    }
    private static void Function()
    {
        System.out.println("Print successful!");
    }
}

class MinMax 
{
   public static void main(String[] args) 
   {
      int a = 12;
      int b = 8;
      int c = Calc(a, b);
      System.out.println(c);
   }
   public static int Calc(int n1, int n2)
   {
      int min;
      if (n1 > n2)
      {
          min = n2;
      }
      else
      {
          min = n1;
      }
      return min; 
   }
}

class SubtractionofNum
{
    public static void main(String[] args) 
    {
        Prog1 obj=new Prog1();
        obj.callSub();
    }
    public void callSub() 
    {
        int theSum = sub(7, 3);
        System.out.print(theSum);
    }
 
    public int sub(int value1, int value2) 
    {   
        return (value1 - value2);
    }
}

class Depreciation
{
    public static void main(String arg[])	
    {
        int amount, dep, year;
        System.out.println(Depreciation.Calc(10000, 10, 1));	
    }
    static int Calc(int amount, int dep, int year )
    {
        for(int i=0;i<year;i++)
        {
            amount=((100-dep)*amount)/100;
        }
        return amount;	 
    }
}

class Triangle 
{
   public static void main(String args[]) 
   {   
       Triangle obj=new Triangle();
       obj.Area(10, 15.0);
   }
   void Area(int b,int h)
   {
      double area=(b*h)/2;
      System.out.println(area); 
   }
}

class TriangleArea extends Square
{
   void Area(int b, int h)
   {
        double area=(b*h)/2;
        System.out.println(area); 
   }
   public static void main(String args[]) 
   {   
        TriangleArea obj=new TriangleArea();
        obj.Area(5);
   }
}
class Square
{
   void Area(int l)
   {
        System.out.println(l*l);
   }
}

class Perimeter
{   
    static double area(double l, double b)
    {   
        double a=2*(l+b);
        return a;
    }
    public static void main(String args[]) 
    {   
        System.out.println(Perimeter.area(10, 20));           
    }
}

class Conversion
{
    double celsius(double f)
    {	
        return (f-32)*5/9;
    }
    public static void main(String args[])	
    {
	Conversion obj=new Conversion();
	double result=obj.celsius(100);	
	System.out.println(result);		  	  	     
    } 	
}

class HCF
{
    void Prime()
    {
   	int n1=10;
   	int n2=6;
	int temp;
   	while (n2 != 0)
   	{
   	    temp = n2;
   	    n2 = n1% n2; 
   	    n1 = temp;
   	}
	System.out.println(n1);
    }
    public static void main(String args[])	
    {
        HCF obj=new HCF();
        obj.Prime();
    }	
}

class Time
{
    int sec;
    void seconds(int m)
    {
        sec=m*60;
        System.out.println(sec);
    }
    public static void main(String[] args)
    {
        int min=60;
        Time obj=new Time();
        obj.seconds(min);	
    }
}

class Loop 
{ 
    void loop()
    {
        for(int i = 0;i!=0;i++);
        { 
            System.out.println("Hello"); 
            break; 
        } 
        System.out.println("Done");
    }
    public static void main(String[] args) 
    { 
        Method obj=new Method();
        obj.loop();
    } 
}

class Sum
{	
    static int sum(int num)
    {
        int sum=0;
        while(num!=0)
        {
            sum=sum + (num%10);
            num=num/10;
        }
        return sum;
    }
    public static void main(String arg[])	
    {
        System.out.println(sum(195));               	  
    }
}

class Circle
{   
    public static void main(String args[]) 
    {   
        System.out.println(Circle.circum(7));   
    }
    public static double circum(double r)
    {   
        double  a=(22*2*r)/7;
        return a;
    }
}

class LeapYear
{
    static int flag=0;
    public static void main(String arg[])	
    {
        System.out.print(leap(2004));  
        System.out.print(leap(2000));  
        System.out.print(leap(1900));  
    }
    static int leap(int year)
    {
        if(year!=0)
        {
            if(year%400==0)
            {
                flag=1;
            }
            else if(year%100==0)
            {
                flag=0;
            }
            else if(year%4==0)
            {                    
                flag=1;
            }
            else 
            {
                flag=0;   
            }                   
        }
        return flag;
 
    }
}