Compares two lines are returns true if they are equal or both null. : Line « 2D Graphics « Java Tutorial

1. Java Tutorial
2. 2D Graphics
3. Line

import java.awt.geom.Line2D;

public class Main {

  /**
   * Compares two lines are returns <code>true</code> if they are equal or
   * both <code>null</code>.
   *
   * @param l1  the first line (<code>null</code> permitted).
   * @param l2  the second line (<code>null</code> permitted).
   *
   * @return A boolean.
   */
  public static boolean equal(final Line2D l1, final Line2D l2) {
      if (l1 == null) {
          return (l2 == null);
      }
      if (l2 == null) {
          return false;
      }
      if (!l1.getP1().equals(l2.getP1())) {
          return false;
      }
      if (!l1.getP2().equals(l2.getP2())) {
          return false;
      }
      return true;
  }

}

16.12.Line
	16.12.1.	Draw a line
	16.12.2.	draw Line from (10, 15) to (100, 115)
	16.12.3.	Line2D.Float
	16.12.4.	Draw a point: use a drawLine() method
	16.12.5.	A line is drawn using two points
	16.12.6.	Dash style line
	16.12.7.	Line dashes style 2
	16.12.8.	Lines Dashes style 3
	16.12.9.	Line Dash Style 4
	16.12.10.	Draw Dashed
	16.12.11.	Compares two lines are returns true if they are equal or both null.
	16.12.12.	Creates a region surrounding a line segment by 'widening' the line segment.