class MyClass
{
    private int value;
    
    MyClass() {
	//default constructor
	value =1;
	System.out.print("the default constructor\n");
    }

    MyClass(int n) {
	System.out.print("the single integer constructor\n");
	value = n; 
    }

    void perform (int m) {
	for (int k=1; k<=value; k++ ) {
	    System.out.print(m*k+" ");
	}
    }
    int compute() {
	return value * value ;
    }
}

public class UseMyClass
{
    public static void main( String[] args )
    {
	MyClass first = new MyClass(5);
	MyClass second = new MyClass(3);
	MyClass third = new MyClass();
	System.out.print("calling first.perform(6) ");
	first.perform(6);
	System.out.print("\ncalling second.perform(-4) ");
	second.perform(-4);
	System.out.print("\nfirst compute " + first.compute() + "\n");
    }
}