Point

Name

Description

The Point class encapsulates a pair of x and y coordinates within a single object.

Class Definition

public class java.awt.Point extends java.lang.Object implements java.io.Serializable {
 // Variables public int x;
public int y; // Constructors public Point(); public Point (int width, int height);
public Point (Point p); // Instance Methods public boolean equals (Object object);
public Point getLocation(); public int hashCode();
public void move (int x, int y);
public void setLocation (int x, int y); public void setLocation (Point p); public String toString();
public void translate (int deltax, int deltay);
}

Variables

x

public int x

The coordinate that represents the horizontal position.

y

public int y

The coordinate that represents the vertical position.

Constructors

Point

public Point()

• Description
• Constructs a Point object initialized to (0, 0).

public Point (int x, int y)

• Parameters
• • x
  • Coordinate that represents the horizontal position.
  • y
  • Coordinate that represents the vertical position.
• Description
• Constructs a Point object with an initial position of (x, y).

public Point (Point p)

• Parameters
• • p
  • Initial position.
• Description
• Constructs a Point object with the same position as p.

Instance Methods

equals

public boolean equals (Object object)

• Parameters
• • object
  • The object to compare.
• Returns
• true if both points have the same x and y coordinates, false otherwise.
• Overrides
• Object.equals()
• Description
• Compares two different Point instances for equivalence.

getLocation

public Point getLocation()

• Returns
• Position of this point.
• Description
• Gets the current position of this Point.

hashCode

public int hashCode()

• Returns
• A hashcode to use the Point is used as a key in a Hashtable.
• Overrides
• Object.hashCode()
• Description
• Generates a hashcode for the Point.

move

public void move (int x, int y)

• Parameters
• • x
  • The new x coordinate.
  • y
  • The new y coordinate.
• Description
• Changes the Point's location to (x, y).

setLocation

public void setLocation (int x, int y)

• Parameters
• • x
  • The new x coordinate.
  • y
  • The new y coordinate.
• Description
• Changes the Point's location to (x, y).

public void setLocation (Point p)

• Parameters
• • p
  • The new location.
• Description
• Changes the Point's location to p.

toString

public String toString()

• Returns
• A string representation of the Point object.
• Overrides
• Object.toString()

translate

public void translate (int deltax, int deltay)

• Parameters
• • deltax
  • Amount to move horizontally.
  • deltay
  • Amount to move vertically.
• Description
• Moves the Point to the location (x+deltax, y+deltay).

See Also

Object, String