What is the compiler complaining about?
in [Java Help]
|
Prev: when call cipher.getInstance(), why throw Exception "The provider BC may not be availled by a trusted mankind"?
Next: Using struts: checkbox list
From: ssecorp on 7 Jul 2008 16:02 I odnt get the exact complaint here. and why am i filling in "w" in the end again? http://java.sun.com/j2se/1.4.2/docs/api/java/awt/image/PixelGrabber.html import java.awt.image.PixelGrabber; public class Main { public static void main(String[] args) { int w = 50; int h = 50; int[] pixels = new int[w * h]; PixelGrabber pix = new PixelGrabber("C:/users/saftarn/desktop/ images/giffer.gif", 1, 1, w, h, pixels, 0, w); } } init: deps-jar: Compiling 1 source file to C:\Users\saftarn\Documents\NetBeansProjects \JAItest\build\classes C:\Users\saftarn\Documents\NetBeansProjects\JAItest\src\jaitest \Main.java:11: cannot find symbol symbol : constructor PixelGrabber(java.lang.String,int,int,int,int,int[],int,int) location: class java.awt.image.PixelGrabber PixelGrabber pix = new PixelGrabber("C:/users/saftarn/desktop/ images/giffer.gif", 1, 1, w, h, pixels, 0, w); 1 error BUILD FAILED (total time: 0 seconds)
From: Eric Sosman on 7 Jul 2008 16:25 ssecorp wrote: > I odnt get the exact complaint here. and why am i filling in "w" in > the end again? > http://java.sun.com/j2se/1.4.2/docs/api/java/awt/image/PixelGrabber.html > > > import java.awt.image.PixelGrabber; > > public class Main { > > public static void main(String[] args) { > int w = 50; > int h = 50; > int[] pixels = new int[w * h]; > PixelGrabber pix = new PixelGrabber("C:/users/saftarn/desktop/ > images/giffer.gif", 1, 1, w, h, pixels, 0, w); > } > > } > > > init: > deps-jar: > Compiling 1 source file to C:\Users\saftarn\Documents\NetBeansProjects > \JAItest\build\classes > C:\Users\saftarn\Documents\NetBeansProjects\JAItest\src\jaitest > \Main.java:11: cannot find symbol > symbol : constructor > PixelGrabber(java.lang.String,int,int,int,int,int[],int,int) > location: class java.awt.image.PixelGrabber > PixelGrabber pix = new PixelGrabber("C:/users/saftarn/desktop/ > images/giffer.gif", 1, 1, w, h, pixels, 0, w); > 1 error > BUILD FAILED (total time: 0 seconds) There is no PixelGrabber constructor that takes a String as its first argument. Depending on which constructor you intend to use, you need to provide an Image or an ImageProducer. If you'll forgive me for saying so, I think you're trying to program by magic: Trying out semi-random incantations until you stumble on one that gives the desired result. That will work, in the very long run, but it's not a speedy or efficient process and it's likely to produce programs that work for the test cases but fail when you apply them to real data. I'd suggest that you spend some time with a textbook or other such materials; Sun's on-line tutorial has a section on 2D graphics that may be helpful to you. -- Eric.Sosman(a)sun.com
From: Knute Johnson on 7 Jul 2008 19:33 ssecorp wrote: > I odnt get the exact complaint here. and why am i filling in "w" in > the end again? > http://java.sun.com/j2se/1.4.2/docs/api/java/awt/image/PixelGrabber.html > > > import java.awt.image.PixelGrabber; > > public class Main { > > public static void main(String[] args) { > int w = 50; > int h = 50; > int[] pixels = new int[w * h]; > PixelGrabber pix = new PixelGrabber("C:/users/saftarn/desktop/ > images/giffer.gif", 1, 1, w, h, pixels, 0, w); > } > > } > > > init: > deps-jar: > Compiling 1 source file to C:\Users\saftarn\Documents\NetBeansProjects > \JAItest\build\classes > C:\Users\saftarn\Documents\NetBeansProjects\JAItest\src\jaitest > \Main.java:11: cannot find symbol > symbol : constructor > PixelGrabber(java.lang.String,int,int,int,int,int[],int,int) > location: class java.awt.image.PixelGrabber > PixelGrabber pix = new PixelGrabber("C:/users/saftarn/desktop/ > images/giffer.gif", 1, 1, w, h, pixels, 0, w); > 1 error > BUILD FAILED (total time: 0 seconds) Lose the PixelGrabber it is only going to give you grief. Use the ImageIO class to read in your images and access the pixel data from the BufferedImage. -- Knute Johnson email s/nospam/knute2008/ -- Posted via NewsDemon.com - Premium Uncensored Newsgroup Service ------->>>>>>http://www.NewsDemon.com<<<<<<------ Unlimited Access, Anonymous Accounts, Uncensored Broadband Access
From: Andrew Thompson on 8 Jul 2008 06:56 On Jul 8, 6:32 am, Daniele Futtorovic <da.futt.n...(a)laposte.invalid> wrote: > >http://java.sun.com/j2se/1.4.2/docs/api/java/awt/image/PixelGrabber.html > > Unless you are really working with 1.4.2, use up-to-date documentation: > <http://java.sun.com/javase/6/docs/api/> I sometimes have trouble producing direct links to the SE 6 JavaDocs when searching 'ClassName+javadoc' in a major search engine. It tends to throw up hits for 1.4.2. Perhaps that is where this '1.4' link originated from. -- Andrew Thompson http://pscode.org/
From: Lew on 8 Jul 2008 07:49
Andrew Thompson wrote: > On Jul 8, 6:32 am, Daniele Futtorovic <da.futt.n...(a)laposte.invalid> > wrote: > >>> http://java.sun.com/j2se/1.4.2/docs/api/java/awt/image/PixelGrabber.html >> Unless you are really working with 1.4.2, use up-to-date documentation: >> <http://java.sun.com/javase/6/docs/api/> > > I sometimes have trouble producing direct links > to the SE 6 JavaDocs when searching 'ClassName+javadoc' > in a major search engine. It tends to throw up > hits for 1.4.2. > > Perhaps that is where this '1.4' link originated from. Well, that and a complete failure to read what one is writing and think about whether the first search hit is the correct search hit. -- Lew |