It is possible to define more than one constructor in a program, which is known as Constructor Overloading or multiple constructor.

Example:

class Example
{
	int x,y;
	Example()
	{
		x = 0;
		y = 0;
	}
		Example(int z)
	{
		x = y = z;
	}
		Example(int p, int q)
	{
		x = p;
		y = q;
	}
		void show()
		{
			System.out.println(x+" "+y);
		}
	}
	class TestExample
	{
		public static void main(String[] args)
	{
		Example obj1 = new Example();
		Example obj2 = new Example(5);
		Example obj3 = new Example(2,3);
		obj1.show();
		obj2.show();
		obj3.show();
	}
}

Output:

0 0
5 5
2 3