Coordinate2D class

The demonstrations on this page use the Coordinate2D class. There are no tricks in the Coordinate2D class. Each constructor and method does what its header suggests.

Selected parts of Coordinate2D are shown below.

• private int x, y;
• public Coordinate2D()
• public Coordinate2D(int initX, int initY)
• public void setX(int newX) and public void setY(int newY)
• public String toString() returns a String in the form: (x, y)

A link to the complete class is below.

Coordinate2D.java

Object construction demo

public class Demo
{
    public static void main(String[] args)
    {
        Coordinate2D c1 = new Coordinate2D(5, 6);
        System.out.println(c1);
    }
}

public class Coordinate2D
{
    private int x, y;

    // Other constructor not shown

    public Coordinate2D(int initX, int initY)
    {
        x = initX;
        y = initY;
    }

    // Additional methods not shown
}

See the step by step trace of this code.

The same trace is available with each step on its own page, starting with Step 1.

Additional classes & objects resources

• Class writing order
• Primitive types vs references exercises
• Primitive types vs references exercises with calls
• ZombiePlant free response

Help & comments

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