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Index › Programming Questions & Help › Syntax Questions › nested array problem
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nested array problem (Read 435 times)
blobkat
nested array problem
Jan 5th, 2009, 7:11pm  
check this out:



float x = 100;
float y = 100;
float rotation;
float friction = -0.7;
boolean alive = false;

float cubesize = 50;

float[] line1points = {1,2,3,4};
float[] line2points = {1,2,3,4};
float[] line3points = {1,2,3,4};
float[] line4points = {1,2,3,4};


float lines[][] = new float[4][];

lines[0] = line1points;
lines[1] = line2points;
lines[2] = line3points;
lines[3] = line4points;

println(lines[0]);
println(lines[1]);
println(lines[2]);
println(lines[3]);



this code works, it's a little test in getting an array in another array. But the problem is this: as soon as I move this code into a class so it looks like this:

class Bouncer {

float x = 100;
float y = 100;
float rotation;
float friction = -0.7;
boolean alive = false;

float cubesize = 50;


float[] line1points = {1,2,3,4};
float[] line2points = {1,2,3,4};
float[] line3points = {1,2,3,4};
float[] line4points = {1,2,3,4};


float lines[][] = new float[4][];

lines[0] = line1points;
lines[1] = line2points;
lines[2] = line3points;
lines[3] = line4points;

println(lines[0]);
println(lines[1]);
println(lines[2]);
println(lines[3]);

... (methods after this...)



it says: Syntax error, maybe a missing ] character?
at this line: lines[0] = line1points;

even if I comment all of the other code in the class and just keep this code, it gives that error...

any help with this one? i'm clueless...
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st33d
Re: nested array problem
Reply #1 - Jan 5th, 2009, 9:51pm  
Remove the println calls and it should work.

You are allowed to define methods and variables inside the main class block, but calling methods from there is a no no.
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WWW  
Ilu
Re: nested array problem
Reply #2 - Jan 6th, 2009, 9:44am  
Hi,

the problem are not only the println(), but the statements outside an enclosing method.

float lines[][] = new float[4][];

is ok, because it is a variable declaration with initialization.

lines[0] = line1points;

is NOT ok, it is a statement which may not be used outside a method.

you can initialize your array this way:
float lines[][] = {
 {1,2,3,4},
 {1,2,3,4},
 {1,2,3,4}
};

Ilu
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blobkat
Re: nested array problem
Reply #3 - Jan 7th, 2009, 8:46am  
Alright thanks alot! I'll remember it for the rest of my days Smiley

Bit of a silly mistake, if you look at it this way...
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