Code: Select all

public void execute() { 
  float volumeInCm3 = 0; 
  double  wallLength = 0; 
  double totalWallLength = 0; 
  StringBuffer wallDimensionsMsg = new StringBuffer(); 
 
  for (Wall wall : getHome().getWalls()){ 
    if (wall.getXStart() == wall.getXEnd()) { 
      wallLength = wall.getYStart() - wall.getYEnd(); 
    } else if (wall.getYStart() == wall.getYEnd()){ 
      wallLength = wall.getXStart() - wall.getXEnd(); 
    } else { 
      wallLength = Math.sqrt(Math.pow((wall.getXEnd()-wall.getXStart()),2) 
          + (Math.pow((wall.getYEnd() - wall.getYStart()),2))); 
  } 
       
  // get rid of negative values 
  wallLength = ((wallLength < 0 ? -wallLength : wallLength)); 
  totalWallLength+=wallLength; 
  wallDimensionsMsg.append("Wall: length " + wallLength + "\n"); 

  wallDimensionsMsg.append(String.format("  Total wall length = %.2f cm", totalWallLength)); 
  JOptionPane.showMessageDialog(null, wallDimensionsMsg); 
}