Creating a simple 2D point class in Java is fairly simple. A Cartesian coordinate system uses points in two dimensions along an *x-axis* and *y-axis*. Each point has a pair of *x* and *y* coordinates along these two axes.

We define a `SimplePoint`

class that has two private properties `x`

and `y`

:

```
public class SimplePoint {
private double x,y;
}
```

To access each property, create two *getter* methods in the class:

```
public double getX() { return x; };
public double getY() { return y; };
```

We could also provide *setter* methods if desired.

A constructor method makes it convenient to create a `SimplePoint`

object at a specific *x,y* location:

```
public SimplePoint(double x1, double y1) {
x = x1;
y = y1;
}
```

For example, to create two `SimplePoint`

objects at *x,y* positions `2,1`

and `8,2`

:

```
SimplePoint p1 = new SimplePoint(2,1);
SimplePoint p2 = new SimplePoint(8,2);
```

Finally, here is a `distance()`

function to calculate the distance between two `SimplePoint`

objects:

```
public double distance(SimplePoint p) {
return Math.sqrt( Math.pow(p.getX()-x,2) + Math.pow(p.getY()-y,2) );
}
```

To calculate and output the distance between `p1`

and `p1`

:

```
System.out.println( p1.distance(p2) ); // 6.082762530298219
```

Here is the complete source code for the `SimplePoint`

class, including the sample `main()`

method:

```
public class SimplePoint {
private double x,y;
public SimplePoint(double x1, double y1) {
x = x1;
y = y1;
}
public double getX() { return x; };
public double getY() { return y; };
public double distance(SimplePoint p) {
return Math.sqrt( Math.pow(p.getX()-x,2) + Math.pow(p.getY()-y,2) );
}
public static void main(String[] args) {
SimplePoint p1 = new SimplePoint(2,1);
SimplePoint p2 = new SimplePoint(8,2);
System.out.println( p1.distance(p2) ); // 6.082762530298219
}
}
```

Java makes it easy to represent 2D points. The `SimplePoint`

class is one way to do that. Create `SimplePoint`

objects at specified locations, then use the `distance()`

function to calculate the distances between them.

Thanks for reading.

Follow me on Twitter `@realEdwinTorres`

for more programming tips. 😀

## Discussion (1)

Good example

You may also, add fountion to retive, p1 in polar. It will return r, cita