createobjectdemo.java

java程序设计

public class CreateObjectDemo {
	public static void main(String[] args) {
		// declare and create a point object
		// and two rectangle objects
		Point originOne = new Point(23, 94);
		Rectangle rectOne = new Rectangle(originOne, 100, 200);
		Rectangle rectTwo = new Rectangle(50, 100);
		// display rectOne's width, height, and area
		System.out.println("Width of rectOne: " +
			rectOne.width);
		System.out.println("Height of rectOne: " +
			rectOne.height);
		System.out.println("Area of rectOne: " + rectOne.area());
		// set rectTwo's position
		rectTwo.origin = originOne;
		// display rectTwo's position
		System.out.println("X Position of rectTwo: "
			+ rectTwo.origin.x);
		System.out.println("Y Position of rectTwo: "
		+ rectTwo.origin.y);
		// move rectTwo and display its new position
		rectTwo.move(40, 72);
		System.out.println("X Position of rectTwo: "
			+ rectTwo.origin.x);
		System.out.println("Y Position of rectTwo: "
			+ rectTwo.origin.y);
	}
}