Java Methods Online Test – 1

1. What is the return type of a method that does not return any value?

2. Which of the following is a method having same name as that of it's class?

3. In the following Java code, which call to sum() method is appropriate?

class Output 
{
  
        public static int sum(int ...x)
        {
             return; 
        }
        static void main(String args[]) 
        {    
             sum(10);
             sum(10,20);
             sum(10,20,30);
             sum(10,20,30,40);
        } 
}

4. What will be the output of the following Java program?

    class box 
    {
        int width;
        int height;
        int length;
        int volume;
        void volume(int height, int length, int width) 
        {
             volume = width*height*length;
        } 
    }    
    class Prameterized_method
    {
        public static void main(String args[])
        {
            box obj = new box();
            obj.height = 1;
            obj.length = 5;
            obj.width = 5;
            obj.volume(3,2,1);
            System.out.println(obj.volume);        
        } 
     }

5. What will be the output of the following Java program?

    class area 
    {
        int width;
        int length;
        int volume;
        area() 
        {
           width=5;
           length=6;
        }
        void volume() 
        {
             volume = width*length*height;
        } 
    }    
    class cons_method 
    {
        public static void main(String args[])
        {
            area obj = new area();
            obj.volume();
            System.out.println(obj.volume);        
        } 
    }

6. What will be the output of the following Java program?

    class equality 
    {
        int x;
        int y;
        boolean isequal()
        {
            return(x == y);  
        } 
    }    
    class Output 
    {
        public static void main(String args[])
        {
            equality obj = new equality();
            obj.x = 5;
            obj.y = 5;
            System.out.println(obj.isequal());
        } 
    }

7. What will be the output of the following Java program?

    class box 
    {
        int width;
        int height;
        int length;
        int volume;
        void volume() 
        {
             volume = width*height*length;
        } 
    }    
    class Output 
    { 
        public static void main(String args[])
        {
            box obj = new box();
            obj.height = 1;
            obj.length = 5;
            obj.width = 5;
            obj.volume();
            System.out.println(obj.volume);        
        } 
    }

8. Which method can be defined only once in a program?

9. What is the process of defining more than one method in a class differentiated by method signature?

10. Which of this statement is incorrect?