gistfile1.txt

public class OOPExample {
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		Numbers num = new Numbers(1, 2);
		System.out.println(num.sum());
		
		Numbers num2 = new Numbers();
		num2.x = 5;
		num2.y = 15;
		System.out.println(num2.diff());

	}
}

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public class Numbers {
	
	double x;
	double y;
		
	public Numbers(double x, double y) {
		this.x = x;
		this.y = y;
	}
	
	public Numbers() {
		super();
	}

	public double sum() {
		double c = x + y;
		return c;
	}
	
	public double multiply() {
		double c = x * y;
		return c;
	}
	
	public double diff() {
		double c = x - y;
		return c;
	}
	
	public double div() {
		double c = x / y;
		return c;
	}

}