Difficulty finding NullPointerException

Programming Questions

trb10g

Difficulty finding NullPointerException

in Programming Questions • 5 months ago

Hey, I'm trying to write a simple processing game that involves several PShapes. I keep getting a NullPointerException, but can't seem to identify where it is. The full error I'm getting is:

Exception in thread "main" java.lang.RuntimeException: java.lang.NullPointerException
at processing.core.PApplet.runSketch(PApplet.java:9869)
at processing.core.PApplet.main(PApplet.java:9678)
Caused by: java.lang.NullPointerException
at processing.core.PApplet.loadShape(PApplet.java:10788)
at MakeYourOwnShake.<init>(MakeYourOwnShake.java:33)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at processing.core.PApplet.runSketch(PApplet.java:9867)
... 1 more

I went through and checked the file names against the .svg's in my data file, and they all seem to match, but I'm still getting the error. Here is my current code, it's mostly just a bunch of initializing variables and shapes at this point:

boolean startPage = true,
chooseChars = false,
chooseScene = false,
chooseNumber = false,
reviewPage = false,
danceyTime1 = false,
danceyTime2 = false,
pose1 = true;
int selectedChars = 1,
selectedScene = 1,
selectedNumber = 1,
dance1cycles = 0,
dance2cycles = 0;
//////////////////////////////////////////////////////////////////////////
/****setup screens****/
//main pieces
PShape backgroundGradient = loadShape("backgroundGradient.svg");//
PShape hostCat = loadShape("hostCat.svg");//
PShape startScreenMessage = loadShape("startScreenMessage.svg");//
PShape chooseCharsMessage = loadShape("chooseCharsMessage.svg");//
PShape chooseSceneMessage = loadShape("chooseSceneMessage.svg");//
PShape chooseNumberMessage = loadShape("chooseNumberMessage.svg");//
PShape reviewMessage = loadShape("reviewMessage.svg");//
//individual words
PShape wordThree = loadShape("wordThree.svg");//
PShape wordFive = loadShape("wordFive.svg");//
PShape wordSix = loadShape("wordSix.svg");//
PShape wordEight = loadShape("wordEight.svg");//
PShape wordTen = loadShape("wordTen.svg");//
PShape wordFifteen = loadShape("wordFifteen.svg");//
PShape wordLitterBox = loadShape("wordLitterBox.svg");//
PShape wordRoof = loadShape("wordRoof.svg");//
PShape wordCardboardBox = loadShape("wordCardboardBox.svg");//
PShape wordCatBed = loadShape("wordCatBed.svg");//
PShape wordByFood = loadShape("wordByFood.svg");//
PShape wordCouch = loadShape("wordCouch.svg");//
PShape wordCats = loadShape("wordCats.svg");//
PShape wordBlackCats = loadShape("wordBlackCats.svg");//
PShape wordHumans = loadShape("wordHumans.svg");//
PShape wordMice = loadShape("wordMice.svg");//
PShape wordKittens = loadShape("wordKittens.svg");//
PShape wordBrownBags = loadShape("wordBrownBags.svg");//
/****background scenes****/
PShape litterBoxScene = loadShape("litterBoxScene.svg");//
PShape roofScene = loadShape("roofScene.svg");//
PShape cardboardBoxScene = loadShape("cardboardBoxScene.svg");//
PShape catBedScene = loadShape("catBedScene.svg");//
PShape byFoodScene = loadShape("byFoodScene.svg");//
PShape couchScene = loadShape("couchScene.svg");//
/**** character shapes ****/
//bags
PShape bag1pose1 = loadShape("bag1pose1.svg");//
PShape bag1pose2 = loadShape("bag1pose2.svg");//
PShape bag1pose3 = loadShape("bag1pose3.svg");//
PShape bag1pose4 = loadShape("bag1pose4.svg");//
PShape bag1pose5 = loadShape("bag1pose5.svg");//
PShape bag1pose6 = loadShape("bag1pose6.svg");//
PShape bag2pose1 = loadShape("bag2pose1.svg");//
PShape bag2pose2 = loadShape("bag2pose2.svg");//
PShape bag2pose3 = loadShape("bag2pose3.svg");//
PShape bag2pose4 = loadShape("bag2pose4.svg");//
PShape bag2pose5 = loadShape("bag2pose5.svg");//
PShape bag2pose6 = loadShape("bag2pose6.svg");//
//humans
PShape human1pose1 = loadShape("human1pose1.svg");//
PShape human1pose2 = loadShape("human1pose2.svg");//
PShape human2pose1 = loadShape("human2pose1.svg");//
PShape human2pose2 = loadShape("human2pose2.svg");//
PShape human3pose1 = loadShape("human3pose1.svg");//
PShape human3pose2 = loadShape("human3pose2.svg");//
PShape human4pose1 = loadShape("human4pose1.svg");//
PShape human4pose2 = loadShape("human4pose2.svg");//
PShape human5pose1 = loadShape("human5pose1.svg");//
PShape human5pose2 = loadShape("human5pose2.svg");//
PShape human6pose1 = loadShape("human6pose1.svg");//
PShape human6pose2 = loadShape("human6pose2.svg");//
//mice
PShape mouse1pose1 = loadShape("mouse1pose1.svg");//
PShape mouse1pose2 = loadShape("mouse1pose2.svg");//
PShape mouse2pose1 = loadShape("mouse2pose1.svg");//
PShape mouse2pose2 = loadShape("mouse2pose2.svg");//
PShape mouse3pose1 = loadShape("mouse3pose1.svg");//
PShape mouse3pose2 = loadShape("mouse3pose2.svg");//
PShape mouse4pose1 = loadShape("mouse4pose1.svg");//
PShape mouse4pose2 = loadShape("mouse4pose2.svg");//
PShape mouse5pose1 = loadShape("mouse5pose1.svg");//
PShape mouse5pose2 = loadShape("mouse5pose2.svg");//
//plain cats
PShape cat1pose1 = loadShape("cat1pose1.svg");//
PShape cat1pose2 = loadShape("cat1pose2.svg");//
PShape cat2pose1 = loadShape("cat2pose1.svg");//
PShape cat2pose2 = loadShape("cat2pose2.svg");//
PShape cat3pose1 = loadShape("cat3pose1.svg");//
PShape cat3pose2 = loadShape("cat3pose2.svg");//
PShape cat4pose1 = loadShape("cat4pose1.svg");//
PShape cat4pose2 = loadShape("cat4pose2.svg");//
PShape cat5pose1 = loadShape("cat5pose1.svg");//
PShape cat5pose2 = loadShape("cat5pose2.svg");//
PShape cat6pose1 = loadShape("cat6pose1.svg");//
PShape cat6pose2 = loadShape("cat6pose2.svg");//
PShape cat7pose1 = loadShape("cat7pose1.svg");//
PShape cat7pose2 = loadShape("cat7pose2.svg");//
PShape cat8pose1 = loadShape("cat8pose1.svg");//
PShape cat8pose2 = loadShape("cat8pose2.svg");//
PShape cat9pose1 = loadShape("cat9pose1.svg");//
PShape cat9pose2 = loadShape("cat9pose2.svg");//
PShape cat10pose1 = loadShape("cat10pose1.svg");//
PShape cat10pose2 = loadShape("cat10pose2.svg");//
//black cats
PShape bcat1pose1 = loadShape("bcat1pose1.svg");//
PShape bcat1pose2 = loadShape("bcat1pose2.svg");//
PShape bcat2pose1 = loadShape("bcat2pose1.svg");//
PShape bcat2pose2 = loadShape("bcat2pose2.svg");//
PShape bcat3pose1 = loadShape("bcat3pose1.svg");//
PShape bcat3pose2 = loadShape("bcat3pose2.svg");//
PShape bcat4pose1 = loadShape("bcat4pose1.svg");//
PShape bcat4pose2 = loadShape("bcat4pose2.svg");//
PShape bcat5pose1 = loadShape("bcat5pose1.svg");//
PShape bcat5pose2 = loadShape("bcat5pose2.svg");//
PShape bcat6pose1 = loadShape("bcat6pose1.svg");//
PShape bcat6pose2 = loadShape("bcat6pose2.svg");//
PShape bcat7pose1 = loadShape("bcat7pose1.svg");//
PShape bcat7pose2 = loadShape("bcat7pose2.svg");//
PShape bcat8pose1 = loadShape("bcat8pose1.svg");//
PShape bcat8pose2 = loadShape("bcat8pose2.svg");//
PShape bcat9pose1 = loadShape("bcat9pose1.svg");//
PShape bcat9pose2 = loadShape("bcat9pose2.svg");//
PShape bcat10pose1 = loadShape("bcat10pose1.svg");//
PShape bcat10pose2 = loadShape("bcat10pose2.svg");//
//kittens
PShape kit1pose1 = loadShape("kit1pose1.svg");//
PShape kit1pose2 = loadShape("kit1pose2.svg");//
PShape kit2pose1 = loadShape("kit2pose1.svg");//
PShape kit2pose2 = loadShape("kit2pose2.svg");//
PShape kit3pose1 = loadShape("kit3pose1.svg");//
PShape kit3pose2 = loadShape("kit3pose2.svg");//
PShape kit4pose1 = loadShape("kit4pose1.svg");//
PShape kit4pose2 = loadShape("kit4pose2.svg");//
PShape kit5pose1 = loadShape("kit5pose1.svg");//
PShape kit5pose2 = loadShape("kit5pose2.svg");//
PShape kit6pose1 = loadShape("kit6pose1.svg");//
PShape kit6pose2 = loadShape("kit6pose2.svg");//
//////////////////////////////////////////////////////////////////////////
void setup() {
size(800,600);
background(255);
smooth();
}
void draw(){
while(startPage){
//draw backgroundGradient from (0,0), full width, full height
//shape(backgroundGradient,0,0,width,height);
//draw hostCat
//draw startScreenMessage
if(mousePressed){
startPage = false;
chooseChars = true;
}
}//end startPage
}//end draw()

The comment //slashes were just my way of checking the file names off as I went through my data file. Does anyone see what my issue might be, or is it definitely just a typo I missed with the PShape names?

Replies(6)

v.k.

Re: Difficulty finding NullPointerException

5 months ago

As it is impossible to run this code without all the svg files, it's har to say. Do you have the shapes inside a folder called "data" inside the sketch folder? like: blah/sketchName/data/blah.svg

trb10g

Re: Difficulty finding NullPointerException

5 months ago

I have ...

MakeYourOwnShake (folder)

>MakeYourOwnShake.pde

>Data (folder)

>>(shapeFile).svg

...

(etc)

...

>>(shapeFile).svg

However, you did give me an idea on how to debug. If you notice any ideas, though, please don't hesitate to still throw them out.

trb10g

Re: Difficulty finding NullPointerException

5 months ago

Update:

I decided to try to check the shape individually/in clumps to try to isolate the issue, and it seems that the first shape (backgroundGradient.svg) is causing an issue.

When I took out all the PShapes, the program ran. When I add in the first PShape, I get an error (the same as before as far as I can tell), and this is my new code:

boolean startPage = true,
chooseChars = false,
chooseScene = false,
chooseNumber = false,
reviewPage = false,
danceyTime1 = false,
danceyTime2 = false,
pose1 = true;
int selectedChars = 1,
selectedScene = 1,
selectedNumber = 1,
dance1cycles = 0,
dance2cycles = 0;
//////////////////////////////////////////////////////////////////////////
/****setup screens****/
//main pieces
PShape backgroundGradient = loadShape("backgroundGradient.svg");
//////////////////////////////////////////////////////////////////////////
void setup() {
size(800,600);
background(255);
smooth();
}
void draw(){
while(startPage){
//draw backgroundGradient from (0,0), full width, full height
//shape(backgroundGradient,0,0,width,height);
//draw hostCat
//draw startScreenMessage
if(mousePressed){
startPage = false;
chooseChars = true;
}
}//end startPage
}//end draw()

I'm certain that I have that file, and it's in the data file.

A screenshot showing as much:

I also tried using the full relative pathway, "PShape backgroundGradient = loadShape("./data/backgroundGradient.svg");" and got the same error.

Also, I tried removing backgroundGradient and testing hostCat.svg the same way, and got the same error, so I'm thinking there some kind of error in my logic and it's not an issue with the file names.

Thoughts/help?